CN217899115U

CN217899115U - Sealing ring

Info

Publication number: CN217899115U
Application number: CN202221385661.7U
Authority: CN
Inventors: 郝百顺
Original assignee: Individual
Current assignee: Inner Mongolia Shunyuan Liangchuan Pipeline Engineering Technology Co ltd
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2022-11-25
Anticipated expiration: 2032-06-02
Also published as: WO2023231847A1

Abstract

The application discloses sealing washer includes: the sealing body at least partially extends outwards along the radial direction of the sealing ring; the positioning part is connected with the sealing body along the axial direction of the sealing ring, and at least part of the positioning part extends outwards along the radial direction of the sealing ring; the annular skeleton is located the location portion. This application strengthens the sealed effect of sealing washer through the sealed body of the radial outside extension along the sealing washer, reduces the sealing washer because of the concrete pipe is pegged graft through the radial outside location portion that extends along the sealing washer, and roll or gliding possibility takes place, through preventing that the sealing washer from rolling and sliding, improves sealed effect, through the radial outside tension of annular skeleton, increases the location reliability of sealed body, realizes simultaneously sealed body and bellmouth between sealed.

Description

Sealing ring

Technical Field

The application relates to the technical field of concrete pipes and spigot-and-socket joints, in particular to a sealing ring.

Background

Concrete pipes are used for transporting water over long distances at high flow rates. When two concrete pipes are spliced together, a sealing ring is usually provided to ensure good sealing at the splicing position of the concrete pipes. When in insertion, the sealing ring is sleeved outside the socket end and is inserted into the socket end together. Under the combined action of the socket end and the socket end, the sealing ring can roll or slide between the socket end and the socket end, and even slide out of a limiting step of the sealing groove, so that sealing failure is caused.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a sealing washer, can reduce the sealing washer because of sliding or roll and influence the sealed risk of concrete pipe.

In one aspect, an embodiment of the present application provides a seal ring, including: the sealing ring comprises a sealing body, a sealing ring and a sealing ring, wherein at least part of the sealing body extends outwards along the radial direction of the sealing ring; the positioning part is connected with the sealing body along the axial direction of the sealing ring, and at least part of the positioning part extends outwards along the radial direction of the sealing ring; the annular skeleton is located the location portion.

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

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

According to an embodiment of one aspect of the application, the cross-sectional shape of the sealing body comprises a first edge, a second edge and a third edge, wherein the second edge and the third edge extend along the radial direction of the sealing ring and are connected in sequence, and the first edge is a convex curve; the diameters of the position, corresponding to the second edge, of the sealing body and the position, corresponding to the third edge, of the sealing body are smaller than the diameter of the position, corresponding to the first edge, of the sealing body.

According to an embodiment of one aspect of the application, the cross section of the positioning part comprises a fourth side, a fifth side and a sixth side, the fifth side and the sixth side extend along the radial direction of the sealing ring, the fifth side, the fourth side and the sixth side are connected in sequence, and the fourth side is a convex curve; the diameters of the positioning part corresponding to the fifth edge and the positioning part corresponding to the sixth edge are smaller than the diameter of the sealing body corresponding to the fourth edge.

According to an embodiment of an 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 an 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 sequentially connected.

According to an embodiment of one aspect of the application, a recessed portion is provided between the positioning portion and the seal body along the axial direction of the seal ring, and the recessed portion is inward along the radial direction of the seal ring; the third, seventh and fifth sides correspond to the cross-sectional shape of the recess.

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

According to an embodiment of an aspect of the 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 conical structure.

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

According to an embodiment of an aspect of the present application, the skeleton applies a force to the positioning portion radially outward of the seal ring.

The sealing washer that this application embodiment provided guarantees the sealed effect of sealing washer through the sealed body of the radial outside extension along the sealing washer, and radial outside extension location portion through along the sealing washer reduces the sealing washer because of the concrete pipe is pegged graft, and takes place to roll or gliding possibility, the position of the relative concrete pipe of fixed seal circle. Through reducing the risk that the sealing washer rolls and slides, this application embodiment can improve sealed effect and sealed reliability.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

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

Fig. 2 isbase:Sub>A sectional view ofbase:Sub>A sectionbase:Sub>A-base:Sub>A of the concrete pipe in fig. 1.

Fig. 3 is a schematic structural view of a sealing ring of a concrete pipe according to an embodiment of the present invention.

Fig. 4 is a schematic cross-sectional view of a liner panel of a concrete pipe according to an embodiment of the present application.

Fig. 5 is a schematic structural diagram of a concrete pipe according to an embodiment of the present invention when a plurality of pipe bodies are inserted into each other.

Fig. 6 is a schematic cross-sectional view of a packing of a concrete pipe according to an embodiment of the present application.

Reference numerals:

1. a tube body; 11. a female end; 12. a liner plate; 121. a sealing groove; 122. positioning a groove; 13. a socket end;

2. a seal ring; 21. a seal body; 211. a first side; 212. a second edge; 213. a third side; 214. an eighth side; 22. a positioning part; 221. a fourth side; 222. a fifth side; 223. a sixth side; 23. a framework; 24. a recessed portion; 241. and a seventh side.

Detailed Description

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

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The embodiments will be described in detail below with reference to the accompanying drawings.

Relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising 8230; \8230;" comprises 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

It will be understood that when a layer, region or layer is referred to as being "on" or "over" another layer, region or layer in describing the structure of the component, it can be directly on the other layer, region or layer or intervening layers or regions may also be present. Also, if the component is turned over, one layer or region may be "under" or "beneath" another layer or region.

In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in 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, from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.

The applicant has found that when concrete pipes are used, a plurality of sections of concrete pipes are usually prefabricated, one end of each section of concrete pipe is a female end, the other end of each section of concrete pipe is a female end, and then the plurality of sections of concrete pipes are sequentially spliced, wherein the female end of a certain section of concrete pipe is inserted into the female end of an adjacent concrete pipe. In order to seal the plug-in connection, a sealing ring is arranged between the socket end and the socket end. The sealing ring is sleeved at the socket end, and then the socket end and the socket end are spliced. However, during plugging, since the cross section of the sealing ring is usually circular and is formed into a cylindrical shape or a conical shape, the relative movement between the female end and the female end can cause the sealing ring to roll. When the sealing ring is inserted, the sealing ring with elastic elongation performance can cross the limiting step under the counterforce of the female end and cannot enter the female end according to the preset value. The sealing ring can be damaged, and the sealing ring can not be tightly attached to the inner wall and the outer wall of the bearing end and the inserting end even if the sealing ring is not damaged, so that the sealing failure of the concrete pipe is caused. Therefore, in actual construction, the sealing failure probability of the traditional concrete bell and spigot pipe is high.

In view of the above problem, the embodiment of the present application provides a concrete pipe, one end of the pipe body is a female end, a lining plate is arranged on the inner side of the female end, and a sealing groove and a positioning groove are arranged on the lining plate. Through setting up the higher welt of structural strength, can compensate the poor problem of concrete structure intensity to reduce seal groove and constant head tank and take place deformation and by the risk that the socket rises and splits, and then reduce the possibility that the sealing washer rolls or slides and become invalid. In addition, the positioning groove can fix the position of the sealing ring relative to the concrete pipe, and the possibility of sliding or rolling of the sealing ring is reduced. Through reducing the rolling and gliding risk of sealing washer, this application embodiment can improve sealed effect and sealed reliability to have stopping and self-locking function.

Example 1

Fig. 1 is a schematic structural view of a concrete pipe according to an embodiment of the present application. Fig. 2 isbase:Sub>A sectional view of the concrete pipe of fig. 1 taken alongbase:Sub>A-base:Sub>A section. Fig. 3 is a schematic structural view of a sealing ring of a concrete pipe according to an embodiment of the present invention. Fig. 4 is a schematic cross-sectional view of a liner panel of a concrete pipe according to an embodiment of the present application.

Referring to fig. 1 to 4, an embodiment of the present application provides a concrete pipe, including: at least one pipe body 1 extending along a first direction, wherein the pipe body 1 comprises a female end 11 and a lining plate 12, the female end 11 is positioned at the end part of the pipe body 1 along the first direction, the lining plate 12 is positioned at the inner side of the female end 11, the lining plate 12 comprises an inner wall surface, and a sealing groove 121 and a positioning groove 122 are arranged on the inner wall surface; at least one sealing ring 2, the sealing ring 2 is arranged on the inner side of 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 may be deformed more than once, and in the embodiment of the present application, a circular shape is taken as an example for description.

The pipe body 1 can be manufactured in a prefabricated form, and when the concrete pipe is installed, the sealing ring 2 is installed on the inner side of the female end 11 of the prefabricated pipe body 1. The insertion object is inserted into the female end 11 to realize connection. The inserted object can be other pipelines or other pipe bodies 1 of concrete pipes. The pipe body 1 is made in the form of concrete casting, and when the concrete is cast, the lining plate 12 is arranged at a position inside the female end 11, so that the lining plate 12 is positioned inside the female end 11 of the pipe body 1 after the forming. The lining plate 12 is made of a material with high structural strength, so that the risk that the sealing groove 121 is deformed or burst is reduced, the defect that the local strength of concrete is poor is overcome, and the sealing effect of the concrete pipe in the embodiment of the application is guaranteed due to the possibility that the sealing ring 2 is separated from the sealing groove 121 in a rolling or sliding mode.

A sealing groove 121 is formed in an inner wall surface of the liner 12, and a portion of the sealing ring 2 is coupled to the sealing groove 121, thereby ensuring a sealing effect of the sealing ring 2 to the insertion portion. A positioning groove 122 is further provided on the inner wall surface of the liner 12, and a part of the seal ring 2 is coupled to the positioning groove 122. Even if the inserted object is inserted into the female end 11, the sealing ring 2 is subjected to a shearing moment, but 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 a good sealing effect. When the inserted object is inserted into the female end 11, at least part of the sealing ring 2 protrudes relative to the inner wall surface, so that the protruding part of the sealing ring 2 relative to the inner wall surface can be abutted against the inserted object, and the purpose of sealing is achieved.

When the inserted object is inserted into the female end 11, the part of the sealing ring 2 protruding relative to the inner wall surface is deformed under the action of the inserted object and bends towards the direction deviating from the female end 11. After the inserted object is completely inserted into the female end 11, if the inserted object tends to withdraw under the action of external force, the part of the sealing ring 2, which is protruded relative to the inner wall surface, is deformed, and tends to recover the deformation, so that the sealing ring 2 is further compressed, and larger friction resistance is generated to prevent the inserted object from withdrawing from the female end 11, and the self-locking function after insertion is realized.

Further, with continued reference to fig. 1 to 4, the sealing ring 2 includes a sealing body 21, at least a portion of the sealing body 21 is coupled to the sealing groove 121, and a tapered structure is disposed inside the sealing ring 2, and an inner diameter of the tapered structure is gradually reduced along an end direction away from the female end 11.

When the object to be inserted is inserted into the pipe body 1, at least a part of the seal body 21 of the seal ring 2 is coupled to the seal groove 121, and the seal between the seal ring 2 and the female end 11 can be achieved. The inboard of sealing washer 2 is equipped with the toper structure, and the internal diameter of toper structure reduces along the tip direction of keeping away from female end 11 gradually, can play the effect of adjusting well when pegging graft. When even the connection object was inserted with body 1, the grafting object can be followed the great one end of formation structure internal diameter and inserted, and the direction of returning the toper structure is adjusted well for the axis of grafting object coincides with the axis of body 1, reaches the purpose of adjusting well, thereby reduces the difference of the effort that sealing washer 2 received everywhere along the circumference of body 1, further reduces sealing washer 2 because of the uneven possibility that loses efficacy of atress, and then reinforcing sealed effect.

Further, with continued reference to fig. 1 to 4, the sealing ring 2 further includes a positioning portion 22, and at least a portion of the positioning portion 22 is coupled to the positioning groove 122. The positioning portion 22 is used to fix the position of the seal ring 2 relative to the liner plate 12, and in particular, to reduce the possibility of the seal ring 2 sliding relative to the liner plate 12, thereby reducing the risk of seal failure caused by the seal ring 2 separating from the seal groove 121.

Further, with reference to fig. 1 to 4, the inner wall surface is further provided with a protrusion, and the protrusion is located between the sealing groove 121 and the positioning groove 122; the sealing ring 2 further comprises a recess 24, the recess 24 being coupled with the protrusion. The protrusion is coupled to the recess 24 to further reduce the possibility of the gasket 2 sliding relative to the liner 12. In addition, when the sealing ring 2 is subjected to a shearing moment, the convex portion and the concave portion 24 are coupled, and the positioning portion 22 and the positioning groove 122 are coupled, so that the liner plate 12 can apply a moment in the opposite direction to the sealing ring 2, the possibility that the sealing ring 2 rolls relative to the liner plate 12 is reduced, and the risk of sealing failure caused by the fact that the sealing ring 2 is separated from the sealing groove 121 is reduced.

Further, with continued reference to fig. 1 to 4, the sealing ring 2 further includes a skeleton 23, the skeleton 23 is disposed in the positioning portion 22 along the circumferential direction of the sealing ring 2, and the skeleton 23 is located in the space formed by the positioning groove 122. The framework 23 is used to support the gasket 2 so that the gasket 2 is in a deployed state. It should be noted that the framework 23 may be made of a rigid material in a compressed state, and applies a force to the seal ring 2 radially outward along the seal ring 2, so as to place the seal ring 2 in an expanded state. If the sealing ring 2 slides or rolls relative to the lining plate 12, the positioning part 22 can be separated from the positioning groove 122. Because the framework 23 is located in the space formed by the positioning groove 122, the tension of the framework 23 can prevent the positioning portion 22 from separating from the positioning groove 122, so that the possibility that the sealing ring 2 slides or rolls relative to the lining plate 12 is reduced, and the sealing effect is further enhanced.

Further, with continued reference to fig. 1 to 4, the positioning slot 122 is located at a side of the end portion of the sealing groove 121 close to the female end 11; the framework 23 of the sealing ring 2 is located in the positioning groove 122, and the tension of the framework 23 can keep the sealing body 21 in the sealing groove 121, so as to prevent the sealing body 21 from being separated from the sealing groove 121 and reaching the first sealing of the sealing ring 2 and the female end 11.

In addition, when the object to be inserted is inserted into the pipe body 1, since the positioning groove 122 is located on the side of the end portion of the seal groove 121 close to the female end 11, the positioning groove 122 can apply a moment to the seal ring 2 to prevent the seal ring from rotating, and thus the possibility of the seal ring 2 rolling with respect to the liner plate 12 can be reduced. In addition, the maximum inner diameter of the positioning groove 122 is greater than the maximum inner diameter of the sealing groove 121, so that the moment arm of the positioning groove 122 applying the moment to the positioning portion 22 is increased, the acting force applied to the positioning portion 22 by the positioning groove 122 is reduced, and the possibility of failure of the sealing ring 2 due to too large stress is reduced.

Further, with reference to fig. 4, the cross-sectional shape of the positioning slot 122 is a trapezoid, and one side of the end surface close to the female end 11 is a bevel edge of the trapezoid; in the uncompressed state, the cross-sectional shape of at least part of the locating portion 22 is semi-circular. Because the cross section of the positioning groove 122 is trapezoidal, and one side of the end surface close to the female end 11 is correspondingly a trapezoidal oblique side, when the sealing ring 2 is installed, the sealing ring 2 can be obliquely inserted into the positioning groove 122 through the corresponding position of the oblique side, and then the sealing ring 2 is rotated, so that the positioning portion 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 position fixing part 22 slips out of the position fixing groove 122. When the plugging object is plugged with the pipe body 1, the sealing ring 2 is extruded, the positioning part 22 is deformed, and the positioning part 22 with the semicircular cross section can be coupled with the positioning groove 122 with the right trapezoid cross section, so that the sealing effect can be achieved. In addition, the width of the bottom of the positioning groove 122 along the axial direction of the female end 11 is smaller than the width of the positioning portion 22, the positioning portion 22 can enter the positioning groove 122 more easily due to the trapezoidal cross-sectional shape, the width of the bottom of the positioning groove 122 is slightly smaller, the positioning portion 22 can be more difficult to slide out from the positioning groove 122, and the positioning portion 22 is squeezed into the positioning groove 122, which ensures sealing for multiple times.

Further, with continued reference to fig. 4, the cross-sectional shape of the sealing slot 121 is rectangular; in the uncompressed state, at least part of the cross-sectional shape of the seal body 21 is semi-circular. The sealing groove 121 having a rectangular cross-sectional shape can reduce the possibility of separation of the seal body 21 from 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 seal groove 121, the seal groove 121 having a rectangular cross-sectional shape does not significantly affect the installation of the seal ring 2. When the inserting object is inserted into the pipe body 1, the sealing ring 2 is extruded, the sealing body 21 deforms, the sealing body 21 with the semicircular cross section can be coupled with the rice noodle groove with the rectangular cross section, and the sealing effect is guaranteed.

When the seal ring 2 is fitted to the inside of the female end 11, a part of the positioning portion 22 is first fitted into the positioning groove 122. Then, the gasket 2 is pushed at a position in the circumferential direction of the gasket 2 so that the gasket 2 is eccentric from the female end 11, and at this time, the gasket 2 at this position is coupled to the packing 12. And knocking the sealing ring 2 gradually from the position along the circumferential direction of the sealing ring 2, so that other parts of the sealing ring 2 are coupled with the lining plate 12 until all the positions of the sealing ring 2 along the circumferential direction are coupled with the lining plate 12, and the sealing ring 2 is coaxial with the female end 11, so that the assembly of the sealing ring 2 and the female end 11 is completed. The diameter of the framework 23 of the sealing ring 2 is larger than the minimum diameter of the lining plate 12, so that the framework 23 is also positioned in the positioning groove 122.

Further, with reference to fig. 1 to 4, the minimum inner diameter of the inner wall surface of the lining board 12 is equal to the inner diameter of the female end 11, so that the inner wall surface of the lining board 12 and the inner side of the female end 11 can form a complete cylindrical surface, the plugging object can be smoothly inserted into the female end 11, and the interference of the lining board 12 on the plugging object is avoided.

Fig. 5 is a schematic structural diagram of a plurality of concrete pipes according to an embodiment of the present invention.

Further, referring to fig. 5, the number of the tube bodies 1 is at least two, and at least two tube bodies 1 are sequentially inserted; the pipe body 1 further comprises a socket end 13, and the socket end 13 is positioned at one end of the pipe body 1 far away from the female end 11 along the first direction; in the two inserted pipe bodies 1, the spigot end 13 of one pipe body 1 is inserted into the spigot end 11 of the other pipe body 1, and the inner side of the sealing ring 2 of the spigot end 11 is abutted with the outer side of the spigot end 13.

When the plurality of pipe bodies 1 are sequentially inserted, one end of the pipe body 1 is a female end 11, and the other end is a female end 13. In the two inserted pipe bodies 1, the spigot end 13 of one pipe body is inserted into the spigot end 11 of the other pipe body, and at the moment, the sealing body 21 of the sealing ring 2 is abutted against the outer wall surface of the spigot end 13, so that the two pipe bodies 1 are sealed. When the two pipe bodies 1 are inserted in place, the sealing ring 2 is in a compressed state, and the sealing body 21 applies pressure to the outer wall surface of the socket end 13, so that sealing between the sealing ring 2 and the outer wall surface of the socket end 13 is realized. Illustratively, the body 1 of the concrete pipe may be a bent pipe or a straight pipe as a whole. When the pipe body 1 is a bent pipe, the inserted parts of the female end 11 and the male end 13 are both straight pipes.

The outer side of the socket end 13 is provided with a chamfer structure, so that no obvious edge exists on the outer side of the socket end 13. When the socket end 13 and the female end 11 are inserted into place, the sealing ring 2 is pressed by the socket end 13 and the female end 11, so that the outer edge of the socket end 13 slides over part of the surface of the sealing body 21 when the socket end 13 is inserted into the female end 11. The chamfer structure can reduce the risk that the outer edge of the socket pipe scratches the surface of the sealing body 21, and has a guiding effect to enable the sealing body 21 to have good sealing performance. The diameter of the end face edge of the chamfered rear socket end 13 should be less than or equal to the inner diameter of the seal ring 2.

Example 2

With continuing reference to fig. 2 and 3 in conjunction with fig. 6, a seal ring 2 according to an embodiment of the present invention is used in a concrete pipe according to embodiment 1 of the present invention.

The embodiment of the application provides a sealing washer 2, includes: a sealing body 21, at least part of the sealing body 21 extending radially outwards of the sealing ring 2; a positioning portion 22 connected to the seal body 21 along an axial direction of the seal ring 2, at least a part of the positioning portion 22 extending outward along a radial direction of the seal ring 2; the inner diameter of the positioning portion 22 is smaller than that of the sealing body 21; and an annular framework 23 positioned in the positioning part 22.

This application embodiment is when using the sealing washer 2 of this application embodiment, installs sealing washer 2 in the female end 11 inboardly of the body 1 of concrete pipe, inserts the spigot end 13 of another body 1 again, realizes the sealed between two bodies 1 through sealing washer 2.

The sealing body 21 is used for realizing the sealing effect of the sealing ring 2, and extends along the radial direction of the sealing ring 2, so that the sealing ring 2 can be coupled with the sealing groove 121 of the female end 11 of the pipe body 1, and the sealing purpose is achieved. The positioning portion 22 is used for fixing the position of the seal ring 2 relative to the female end 11, and extends along the radial direction of the seal ring 2, so that the possibility that the seal ring 2 rolls or slides relative to the female end 11 can be reduced, and the sealing effect is enhanced. Annular skeleton 23 can support sealing washer 2, reduces the possibility that location portion 22 breaks away from constant head tank 122, has radial outside effort to location portion 22 under the effect of the outside tension of skeleton 23 simultaneously, compresses tightly location portion 22 in constant head tank 122, further strengthens sealed effect.

Further, with continued reference to fig. 6, the inner side of the sealing ring 2 is provided with a tapered structure, and the inner diameter of the tapered structure gradually increases along the axial direction of the sealing ring 2. The conical structure of the inner side of the sealing ring 2 can play a role of alignment. When the socket end 13 is inserted into the socket end 11, the socket end 13 is inserted into the socket end 11 under the guidance of the tapered side surface of the tapered structure, and at the moment, the axis of the socket end 13 coincides with the axis of the socket end 11, so that the aim of alignment is fulfilled, the difference of acting force applied to each position of the sealing ring 2 in the circumferential direction is reduced, and the possibility of failure of the sealing ring 2 due to uneven stress is reduced.

Further, with continued reference to fig. 6, the inner diameter of the tapered structure gradually decreases in the axial direction of the seal ring 2 from the positioning portion 22 to the seal body 21. When the socket end 13 is inserted into the socket end 11, the sealing ring 2 is subjected to the moment generated by the combined action of the socket end 13 and the socket end 11, and the risk of rolling exists. With location portion 22 setting in the great one side of toper structure internal diameter, location portion 22 and the constant head tank 122 interact of bell end 11 produce and hinder sealing washer 2 pivoted moment, consequently, can reduce the rolling risk of sealing washer 2 relative bell end 11, improve sealed effect.

Further, the diameter of the framework 23 in the positioning portion 22 of the sealing ring 2 is larger than the minimum diameter of the lining plate 12, and the radial outward tension of the rigid framework 23 realizes that the positioning portion 22 is effectively fixed in the positioning groove 122 of the sealing ring 2, so that the axial thrust in the plugging process is effectively resisted.

Further, with continued reference to fig. 6, the cross-sectional shape of the seal body 21 includes a first side 211, a second side 212 and a third side 213 extending in the radial direction of the seal ring 2, the second side 212, the first side 211 and the third side 213 being connected in sequence, the first side 211 being a convex curve; the diameter of the sealing body 21 at the location corresponding to the second side 212 and at the location corresponding to the third side 213 is smaller than the diameter of the sealing body 21 at the location corresponding to the first side 211. The second side 212, the first side 211 and the third side 213 are connected in sequence, corresponding to a portion of the cross-sectional shape of the sealing body 21. On the seal body 21, portions corresponding to the second side 212, the first side 211, and the third side 213 are coupled with the seal groove 121 of the female end 11. The diameters of the sealing body 21 corresponding to the second edge 212 and the third edge 213 are smaller than the diameter of the sealing body 21 corresponding to the first edge 211, and the portions of the sealing body 21 corresponding to the second edge 212 and the third edge 213 ensure that the sealing body 21 can extend outward in the radial direction of the sealing ring 2. The first side 211 is a convex curve, which may be, for example, a circular arc or an elliptical arc, so that the sealing body 21 can be coupled 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 is inserted into the socket end 11, the sealing body 21 is deformed by extrusion, and a portion corresponding to the first side 211 can be coupled with the sealing groove 121 more tightly, so as to ensure the sealing effect.

Further, with continued reference to fig. 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 fifth side 222, the fourth side 221 and the sixth side 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 order, corresponding to a part of the cross-sectional shape of the positioning portion 22. In the positioning portion 22, the distance between the fifth side 222 and the sixth side 223 is larger than the width of the bottom of the positioning groove 122. After the sealing ring 2 is installed in the liner 12 of the socket end 11, the positioning portion 22 is pressed into the positioning groove 122 under the outward tension of the framework 23. The fourth side 221 is a convex curve, which may be, for example, a circular arc or an elliptical arc, so that the positioning portion 22 can be attached to the positioning groove 122 of the socket end 11 under the action of the radially outward tension of the framework 23, thereby further enhancing the sealing effect.

Further, with continued reference 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 frame 23 is located in the space formed by the positioning groove 122, so that the possibility that the positioning portion 22 is disengaged from the positioning groove 122 is reduced, and the seal ring 2 is difficult to roll or slide relative to the female end 11.

Further, with continued reference to fig. 6, between the positioning portion 22 and the seal body 21 in the axial direction of the seal ring 2, a recessed portion 24 is provided inward in the radial direction of the seal ring 2. The cross-sectional shape of the sealing body 21 further includes a seventh side 241, the third side 213, the seventh side 241 and the fifth side 222 are sequentially connected, and the third side 213, the seventh side 241 and the fifth side 222 correspond to the cross-sectional shape of the recess 24. The recess 24 can couple with a protrusion of the female end 11, further reducing the likelihood of the seal ring 2 slipping relative to the backing plate 12. In addition, when the socket end 13 is inserted into the socket end 11, the convex portion and the concave portion 24 are coupled, so that the liner plate 12 can apply a moment in the opposite direction to the seal ring 2, the possibility of rolling of the seal ring 2 relative to the liner plate 12 is reduced, and the risk of seal failure caused by separation of the seal ring 2 from the seal groove 121 is reduced. The seventh side 241 is used to connect the third side 213 and the fifth side 222 to form a concave shape, and the third side 213, the seventh side 241 and the fifth side 222 correspond to the concave portion 24.

Further, the minimum outer diameter of the recess 24 is smaller than the diameter of the skeleton 23, so that the skeleton 23 can be located in the positioning groove 122 of the female end 11. When the sealing ring 2 has a tendency to move relative to the female end 11, the protruding portion of the female end 11 can block the rib 23 by applying a reverse thrust, so that the sealing ring 2 is prevented from moving relative to the female end 11.

Further, the cross-sectional shape of the sealing body 21 further includes an eighth side 214, and a sixth side 223, the eighth side 214 and the second side 212 are connected in sequence; the eighth side 214 corresponds with 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 sequentially connected end to form the cross-sectional shape of the gasket 2. When the inserted object is inserted into the female end 11, the eighth edge 214 may rub against the inserted object, so that the sealing ring 2 is deformed, and the sealing ring 2 applies pressure to the female end 11 and the inserted object at the same time, thereby ensuring a good sealing effect. When the plugging object has a tendency of coming off from the female end 11, the reverse friction force between the eighth edge 214 and the plugging object can enable the sealing ring 2 to generate a tendency of recovery deformation, so that the pressure of the sealing ring 2 on the female end 11 and the plugging object is further increased, a larger friction force is further generated, and stopping and self-locking are realized.

Further, with reference to fig. 6, the framework 23 applies an outward acting force to the positioning portion 22 along the radial direction of the sealing ring 2, and since the framework 23 is located in the space formed by the positioning groove 122, the tension of the framework 23 can prevent the positioning portion 22 from separating from the positioning groove 122, so that the possibility that the sealing ring 2 slides or rolls relative to the lining plate 12 is reduced, and the sealing effect is further enhanced.

While the invention has been described with reference to specific embodiments, the scope of the invention is not limited thereto, and those skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A seal ring, comprising:

a seal body, at least a portion of the seal body extending radially outward of the seal ring;

the positioning part is connected with the sealing body along the axial direction of the sealing ring, and at least part of the positioning part extends outwards along the radial direction of the sealing ring;

and the annular framework is positioned in the positioning part.

2. A seal ring according to claim 1, characterized in that the inner side of the seal ring is provided with a conical structure, the inner diameter of which is gradually increased in the axial direction of the seal ring.

3. The seal ring of claim 2, wherein the tapered structure has an inner diameter that gradually decreases in an axial direction of the seal ring from the locating portion to the seal body.

4. The seal ring according to claim 2, wherein the cross-sectional shape of the seal body comprises a first edge, a second edge and a third edge extending in a radial direction of the seal ring, the second edge, the first edge and the third edge being connected in sequence, the first edge being a convex curve; the diameters of the sealing body corresponding to the second edge and the third edge are smaller than the diameter of the sealing body corresponding to the first edge.

5. The seal 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 seal ring, the fifth side, the fourth side and the sixth side being connected in this order, the fourth side being a convex curve;

the diameters of the positioning part corresponding to the fifth edge and the sixth edge are smaller than the diameter of the sealing body corresponding to the fourth edge.

6. The seal ring according to claim 5, wherein the skeleton is located in an area where the positioning portion is formed corresponding to the fifth side, the fourth side, and the sixth side.

7. The seal ring of claim 5, wherein the cross-sectional shape of the seal body further comprises a seventh side, the third side, the seventh side, and the fifth side being connected in series.

8. The seal ring according to claim 7, wherein a recessed portion is provided between the positioning portion and the seal body in an axial direction of the seal ring, the recessed portion being inward in a radial direction of the seal ring; the third side, the seventh side, and the fifth side correspond to a cross-sectional shape of the recess.

9. The seal ring of claim 8, wherein the minimum outer diameter of the indentation is less than the diameter of the backbone.

10. The seal ring of claim 7, wherein the cross-sectional shape of the seal body further comprises an eighth side, the sixth side, the eighth side, and the second side being connected in series; the eighth side corresponds to an inner side surface of the tapered structure.

11. A seal ring according to claim 10, wherein the seal ring is for use in the spigot-and-socket sealing of a female end of a concrete pipe, at least part of the corresponding faces of the eighth side having an internal diameter less than the external diameter of the female end.

12. The seal ring according to claim 1, wherein the skeleton applies a force to the positioning portion outward in a radial direction of the seal ring.