CN117419163A - Socket pre-planting self-locking sealing ring and plug-in pipe - Google Patents

Abstract

The application discloses a socket pre-planting self-locking sealing ring and a plug pipe, wherein the socket pre-planting self-locking sealing ring is used for sealing between a socket end and a socket end; comprising the following steps: the annular body part comprises a first surface, and the first surface faces the radial inner side of the socket pre-planting self-locking sealing ring; the first surface is provided with a concave annular positioning groove; the annular tension framework is positioned in the annular positioning groove; the tension framework comprises a first end and a second end which are abutted; the first end is provided with a first positioning hole perpendicular to the extension direction of the tension framework; the sliding sleeve is sleeved on the tension framework and is in sliding connection with the tension framework; the sliding sleeve is provided with a second positioning hole perpendicular to the extension direction of the tension framework; and the locating pin is inserted into the first locating hole and the second locating hole. The socket pre-planting self-locking sealing ring and the plug pipe can reduce the possibility of sealing failure and improve the sealing reliability.

Description

Socket pre-planting self-locking sealing ring and plug-in pipe

Technical Field

The application relates to the technical field of connecting pipe socket and spigot, in particular to a socket pre-planting self-locking sealing ring and a socket.

Background

The connecting pipe is used for conveying fluids such as water, oil, gas and the like in a long-distance and large-flow way and can be made of concrete materials. A plurality of pipe bodies are prefabricated, and then the pipe bodies are connected together, and a socket end and a spigot end are often used for inserting connection. The traditional socket connection is usually fixed the sealing washer in the outside of socket, after two body grafting, when two body received the effect of perpendicular radial external force, for example both sides soil pressure was inconsistent when backfilling, and the foundation subsides, and when external force such as pipeline was floated, the axial lead skew of two pipes, the sealing washer of fixing at the socket can become the removal along bellmouth internal surface, and the sealing washer loses and the bellmouth internal surface changes the attitude perpendicularly. The outer edge of the sealing ring and the inner surface of the bell mouth are in an oblique crossing state, so that the outer edge space of the constraint sealing ring is enlarged, the compression ratio of the sealing ring is reduced, the sealing failure is caused, and even the bell and spigot are separated, so that the use is influenced.

Disclosure of Invention

The embodiment of the application provides a socket is planted in advance and is locked sealing washer and grafting pipe in advance, can reduce the possibility of sealed inefficacy.

In a first aspect, an embodiment of the present application provides a socket pre-planting self-locking sealing ring, which is used for sealing between a socket end of one pipe body and a socket end of another pipe body, where the socket pre-planting self-locking sealing ring is fixedly connected with the socket end; the socket is planted in advance and is locked the sealing washer includes: the annular body part comprises a first surface, and the first surface faces the radial inner side of the socket pre-planting self-locking sealing ring; the first surface is provided with a concave annular positioning groove; the annular tension framework is positioned in the annular positioning groove; the tension framework comprises a first end and a second end which are abutted; the first end is provided with a first positioning hole perpendicular to the extension direction of the tension framework; the sliding sleeve is sleeved on the tension framework and is in sliding connection with the tension framework; the sliding sleeve is provided with a second positioning hole perpendicular to the extension direction of the tension framework; and the locating pin is inserted into the first locating hole and the second locating hole.

According to an embodiment of the first aspect of the present application, the sliding sleeve covers more than the abutment of the first end and the second end.

According to the embodiment of the first aspect of the application, the cross section of the extension direction of the self-locking sealing ring is pre-planted in the vertical socket, the cross section of the tension skeleton is circular, the cross section of the annular positioning groove is semicircular, and the outer diameter of the cross section of the tension skeleton is equal to the inner diameter of the cross section of the annular positioning groove.

According to an embodiment of the first aspect of the present application, the first surface extends along the axial direction of the socket pre-planted self-locking sealing ring and is cylindrical; the body portion further includes a second surface; along the axial direction of the socket preimplantation self-locking sealing ring, one end of the first surface is connected with the second surface, and along the direction deviating from the first surface, the diameter of the second surface is gradually reduced.

According to an embodiment of the first aspect of the present application, the body portion further comprises a third surface; the self-locking sealing ring is pre-planted along the axial direction of the socket, and the third surface is positioned at one side of the second surface far away from the first surface; the body part also comprises a ratchet part which is arranged at the joint of the third surface and the second surface and comprises a wheel body part and thorn parts, wherein the thorn parts are uniformly distributed on the outer surface of the wheel body part, and the thorn parts incline along the direction from the second surface to the second surface.

According to an embodiment of the first aspect of the present application, the cross-sectional shape of the socket pre-planted self-locking sealing ring comprises a first edge line, a second edge line and a ratchet edge line; the first side line, the ratchet side line and the second side line are sequentially connected, the first side line corresponds to the second surface, the ratchet side line corresponds to the ratchet part, and the second side line corresponds to the third surface.

According to an embodiment of the first aspect of the present application, the body portion further comprises an embedded portion, the embedded portion being located radially outside of the body portion along the socket pre-planted self-locking seal ring; the embedded part is embedded with the inner side of the socket end; the embedded part comprises a first protruding part, a second protruding part and a first recessed part, the first recessed part is positioned between the first protruding part and the second protruding part along the axial direction of the socket pre-planting self-locking sealing ring; the first protruding portion and the second protruding portion extend outwards along the radial direction of the socket pre-planting self-locking sealing ring, and orthographic projection of the annular positioning groove overlaps with the first protruding portion.

According to an embodiment of the first aspect of the present application, the body portion further includes a fourth surface and a fifth surface, the fourth surface is located at one end of the body portion along the axial direction of the socket, and the first surface is connected with the fourth surface; and the axial direction of the self-locking sealing ring is pre-planted along the socket, one end of the fifth surface is connected with the fourth surface, and the other end of the fifth surface is connected with the first protruding part.

In a second aspect, embodiments of the present application provide a plug tube, including: the pipe body comprises a bell end and a spigot end, wherein the spigot end of one pipe body is spliced with the bell end of the adjacent pipe body; the inner surface of the socket end is provided with a sealing positioning groove; the socket of this application embodiment of the first aspect plants the self-locking sealing washer in advance, is located the grafting department of two adjacent body, and at least partial socket plants self-locking sealing washer in advance and seals the constant head tank gomphosis.

According to an embodiment of the second aspect of the application, the outer surface of the socket end is provided with a plurality of annular grooves, and the annular grooves are axially arranged along the socket pre-planted self-locking sealing ring; the annular groove is inclined towards the direction from the socket end to the socket end along the axial direction of the socket pre-planted self-locking sealing ring.

In the bellmouth preimplantation self-locking sealing ring and the plug pipe that this embodiment provided, the bellmouth preimplantation self-locking sealing ring set up between two mutually pegged graft the body, annular body portion can imbed in the sealed draw-in groove of bellmouth end, tension skeleton imbeds in the radial inboard annular constant head tank of body portion, tension skeleton produces radial outside effort to body portion, compress body portion rubber to bellmouth draw-in groove with body portion in, fix the sealing washer inboard at the bellmouth, compress the sealing washer when pegging graft at spigot end and bellmouth end, reduced bellmouth preimplantation self-locking sealing ring and deviate from the possibility of sealing the constant head tank. When the tension framework is installed, the first end and the second end of the tension framework can be arranged in a staggered mode, so that the installation is convenient. After installation, the first and second ends of the tension frame abut to maintain the tension frame in a radially outward tension. The sliding sleeve can limit the first end and the second end, when the tension framework is acted by external force, the first end and the second end can also be kept in a propped state, so that the tension framework maintains a radial outward tension state, the body part is tightly pressed in the sealing positioning groove, and the risk of sealing failure caused by the fact that the sealing ring is separated is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed 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 that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a socket pre-planting self-locking seal ring according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of an adapter according to an embodiment of the present application.

Fig. 3 is a schematic structural view of a tension skeleton, a sliding sleeve and a positioning pin of a socket pre-planted with a self-locking seal ring according to an embodiment of the present application.

Fig. 4 is a schematic installation view of the socket pre-planting self-locking seal ring fixed on the inner side of the socket end of the pipe body according to the embodiment of the application.

Fig. 5 is a schematic cross-sectional view of a body portion of a socket pre-planted self-locking seal in accordance with an embodiment of the present application.

FIG. 6 is a schematic cross-sectional view of a socket pre-planted self-locking seal ring embedded in a dense layer groove at the socket end according to an embodiment of the present application.

Fig. 7 is a schematic view of a socket end of a pipe body of a socket according to an embodiment of the present application.

Reference numerals:

1. the socket is pre-planted with a self-locking sealing ring;

11. a body portion; 111. an annular positioning groove; 112. a ratchet part; 113. a wheel body; 114. a thorn part; 115. an embedding part; 116. a first boss; 117. a second protruding portion; 118. a first concave portion;

12. a tension skeleton; 121. a first end; 122. a second end; 123. a first positioning hole;

13. a sliding sleeve; 131. a second positioning hole;

14. a positioning pin;

2. a tube body; 21. a socket end; 211. an annular groove; 22. a socket end; 221. sealing the positioning groove;

p1, a first surface; p2, a second surface; p3, a third surface; p4, fourth surface; p5, fifth surface;

l2, a first side line; l3, a second side line; l112, ratchet edge.

Detailed Description

Features and exemplary embodiments of various aspects of the present 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 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 showing an example of the present application.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. 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. Moreover, 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 phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

It will be understood that when a layer, an area, or a structure is described as being "on" or "over" another layer, another area, it can be referred to as being directly on the other layer, another area, or another layer or area can be included between the layer and the other layer, another area. And if the component is turned over, that layer, one region, will be "under" or "beneath" the other layer, another region.

In addition, the term "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be understood that in the embodiments of the present application, "B corresponding to a" means that B is associated with a, from which B may be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.

The applicant has found that when using a connection tube, it is common to prefabricate a multi-section tube. If the pipe bodies of the connecting pipes are connected in a splicing mode, one end of each pipe body is a socket end, and the other end of each pipe body is a socket end. The multi-section connecting pipes are sequentially spliced, wherein the socket end of one section of connecting pipe is inserted into the socket end of the adjacent connecting pipe. In order to seal the socket, a sealing ring is arranged between the spigot end and the socket end. After the connection of the connection pipes is completed, in some cases, for example, during the use of the connection pipes, the two connection pipes may undergo relative displacement or displacement in the axial direction, and the sealing ring is lost and is turned vertically to the inner surface of the socket. The outer edge of the sealing ring and the inner surface of the bell mouth end are in an oblique crossing state, so that the outer edge space of the constraint sealing ring is enlarged, the compression ratio of the sealing ring is reduced, the sealing failure is caused, and even the bell and spigot are separated, so that the use is influenced.

In view of the above problems, the applicant proposes a socket pre-planted with a self-locking seal ring and an insertion pipe, the socket is provided with a seal ring clamping groove; the socket pre-planting self-locking sealing ring comprises a body part, a tension framework, a sliding sleeve and a positioning pin. The tension skeleton is embedded into the annular positioning groove on the radial inner side of the body part, the tension skeleton generates radial outward acting force on the body part, rubber pressed by the body part is compressed, the tension skeleton is partially or completely embedded into the sealing positioning groove at the socket end, the socket is pre-planted with the self-locking sealing ring, the self-locking sealing ring is fixed on the inner surface of the socket end, and the possibility that the socket is pre-planted with the self-locking sealing ring to be separated from the sealing positioning groove is reduced when the socket end and the socket end are spliced. When the tension framework is installed, the first end and the second end of the tension framework can be arranged in a staggered mode, so that the installation is convenient. After installation, the first and second ends of the tension frame abut to maintain the tension frame in a radially outward tension. The sliding sleeve can limit the first end and the second end, when the tension framework is acted by external force, the first end and the second end can also be kept in a propped state, so that the tension framework maintains a radial outward tension state, the body part is tightly pressed in the sealing positioning groove, and the risk of sealing failure caused by the fact that the sealing ring is separated is reduced.

Fig. 1 is a schematic structural view of a socket pre-planting self-locking seal ring according to an embodiment of the present application. Fig. 2 is a schematic structural view of an insertion tube according to an embodiment of the present application, and fig. 3 is a schematic structural view of a tension skeleton, a sliding sleeve and a positioning pin of a socket pre-planting self-locking seal ring according to an embodiment of the present application. Fig. 4 is a schematic installation view of the socket pre-planting self-locking seal ring fixed on the inner side of the socket end of the pipe body according to the embodiment of the application.

Referring to fig. 1 to 4, the present embodiment provides a socket pre-planting self-locking sealing ring, which is used for sealing between a socket end 21 of one pipe body 2 and a socket end 22 of another pipe body 2, and the socket pre-planting self-locking sealing ring 1 is fixedly connected with the socket end 22; the socket pre-planting self-locking sealing ring 1 comprises: the annular body part 11 comprises a first surface P1, and the first surface P1 faces the radial inner side of the socket pre-planting self-locking sealing ring 1; the first surface P1 has a recessed annular positioning groove 111; a tension skeleton 12 in the shape of a ring, at least part of the tension skeleton 12 being located in the annular positioning groove 111; the tension framework 12 comprises a first end 121 and a second end 122, and the first end 121 and the second end 122 are abutted; the first end 121 is provided with a first positioning hole 123 perpendicular to the extending direction of the tension frame 12; the sliding sleeve 13 is sleeved on the tension framework 12 and is in sliding connection with the tension framework 12; the sliding sleeve 13 is provided with a second positioning hole 131 perpendicular to the extension direction of the tension skeleton 12; and the positioning pin 14, wherein the positioning pin 14 is inserted into the first positioning hole 123 and the second positioning hole 131.

When the socket pre-planting self-locking sealing ring 1 of the embodiment of the application is used for connecting two pipe bodies 2, the spigot end 21 of one pipe body 2 is inserted into the socket end 22 of the other pipe body 2 along the axial direction of the socket pre-planting self-locking sealing ring 1. The body 11 of the socket pre-planting self-locking sealing ring 1 in the embodiment of the application is sleeved at the socket end 21 of the pipe body 2 in an annular mode, and is clamped between the socket end 22 and the socket end 21.

The body 11 is embedded into the sealing positioning groove 221 of the socket end 22, and after the two pipe bodies 2 are inserted, the body 11 is extruded and deformed, so that the purpose of sealing between the socket end 21 and the socket end 22 is achieved.

The tension skeleton 12 is embedded in the annular positioning groove 111, the annular positioning groove 111 is located on the first surface P1, and the first surface P1 is located on the radial inner side of the socket pre-planting self-locking sealing ring 1 of the main body. The tension skeleton 12 is in tension state, can apply the radial outside effort of planting self-locking sealing washer 1 in advance along the bellmouth to body portion 11 for body portion 11 can imbed in the seal positioning groove 221, thereby makes the bellmouth of this application embodiment plant self-locking sealing washer 1 in advance can possess good sealed effect.

The tension frame 12 includes a first end 121 and a second end 122, and the tension frame 12 may be made of a rod-shaped material having a certain elasticity. When the tension frame 12 is installed, the tension frame 12 is bent into a loop shape and placed in the loop-shaped positioning groove 111. In the process of installation, the tension skeleton 12 can be bent to more than 360 degrees, so that the first end 121 and the second end 122 are overlapped in the circumferential direction of the socket pre-planting self-locking sealing ring 1, and an external force is applied after most of the circumferential direction of the tension skeleton 12 is placed in the annular positioning groove 111, so that the circumferential direction of the tension skeleton 12 is embedded into the annular positioning groove 111. At this time, the first end 121 and the second end 122 are abutted, and the tension skeleton 12 is in a tension state, the tension skeleton 12 applies an acting force to the body portion, so that the body portion is embedded into the sealing positioning groove of the socket end 22, and the body portion 11 is prevented from being separated from the sealing positioning groove 221, so that the risk of failure of the socket pre-implantation self-locking sealing ring 1 in the embodiment of the application is reduced. When the socket end 21 and the spigot end 22 are spliced, the compression spigot on the outer side of the socket end 21 is pre-planted with the self-locking sealing ring 1, so that the sealing purpose is achieved.

The tension skeleton 12 can be located to the cover 13 cover, can slide on tension skeleton 12, when the cover 13 slides to the junction of first end 121 and second end 122, can restrict the relative position of first end 121 and second end 122, make first end 121 and second end 122 can be in the same place with each other butt, even tension skeleton 12 receives certain external force, tension skeleton 12 still can be in tension state, maintain the radially outside effort of planting self-locking seal 1 in advance along the bellmouth that applys body portion 11, reduce body portion 11 and deviate from the possibility of taking off in the seal constant head tank 221 because of external force, and then reduced the risk that the bellmouth of this application embodiment plants self-locking seal 1 in advance.

The locating pin 14 inserts the second locating hole 131 of locating hole 123 and slip cap 13 of locating first end 121, can fix the relative position of slip cap 13 and tension skeleton 12, even slip cap 13 receives certain external force, slip cap 13 still can restrict first end 121 and second end 122 for first end 121 and second end 122 can keep the state of butt, and then make tension skeleton 12 still can be in tension state, maintain the radially outside effort of planting self-locking sealing washer 1 in advance along the bellmouth that applys body portion 11, reduce body portion 11 and deviate from the possibility in sealing constant head tank 221 because of external force, and then reduced the risk that the bellmouth of this application embodiment plants self-locking washer 1 in advance and became invalid. When the tension skeleton 12 is installed, the positioning pin 14 is firstly removed, the sliding sleeve 13 is moved, one end and the second end 122 of the tension skeleton 12 are exposed, the tension skeleton 12 is bent to more than 360 degrees, most of the circumference of the tension skeleton 12 is embedded into the annular positioning groove 111, the tension skeleton 12 is released, the circumference of the tension skeleton 12 can be embedded into the annular positioning groove 111, the sliding sleeve 13 is moved, the first end 121 and the second end 122 of the sliding sleeve 13 are limited to be in a abutting state, the positioning pin 14 is inserted into the first positioning hole 123 and the second positioning hole 131, the relative positions of the sliding sleeve 13 and the tension skeleton 12 are fixed, and the installation of the tension skeleton 12 is completed.

Further, with continued reference to fig. 1-4, the sliding sleeve 13 wraps the abutment of the first end 121 and the second end 122.

The sliding sleeve 13 is configured to cover the contact portion between the first end 121 and the second end 122 to limit the relative positions of the first end 121 and the second end 122, thereby allowing the first end 121 and the second end 122 to contact each other. The inner diameter of the sliding sleeve 13 may be slightly larger than the outer diameter of the tension frame 12, but the inner diameter of the sliding sleeve 13 should be less than 2 times the outer diameter of the tension frame 12. Because the sliding sleeve 13 is fixed at the connection position of the first end 121 and the second end 122 by the locating pin 14, under the condition that the sliding sleeve 13 receives a certain external force, the sliding sleeve 13 can also cover the ground connection position of the first end 121 and the second end 122, so that the first end 121 and the second end 122 are maintained in a abutting state, the radial outward acting force of the tension framework 12 on the body part 11 along the socket, which is applied by the tension framework 12, of the self-locking sealing ring 1 is pre-planted, the possibility that the body part 11 is separated from the sealing locating groove 221 due to the external force is reduced, and the risk of failure of the socket pre-planting self-locking sealing ring 1 in the embodiment of the application is further reduced.

Fig. 5 is a schematic cross-sectional view of a body portion of a socket pre-planted self-locking seal in accordance with an embodiment of the present application. FIG. 6 is a schematic cross-sectional view of a socket pre-planted self-locking seal ring embedded in a dense layer groove at the socket end according to an embodiment of the present application.

Further, referring to fig. 5 and 6, and referring to fig. 1 to 4, the cross section of the self-locking seal ring 1 in the extending direction is pre-planted in the vertical socket, the cross section of the tension skeleton 12 is circular, the cross section of the annular positioning groove 111 is semi-circular, and the outer diameter of the cross section of the tension skeleton 12 is equal to the inner diameter of the cross section of the annular positioning groove 111.

When the first end 121 and the second end 122 of the tension skeleton 12 abut, the tension skeleton 12 may be regarded as a ring structure, and on a cross section perpendicular to the circumferential direction, the cross section of the tension skeleton 12 is circular, so that the tension skeleton 12 can more uniformly stress the radial direction of the support of the body portion 11 at all positions in the circumferential direction, thereby improving the fixing performance of the body portion 11. The outer diameter of the cross-sectional shape of the tension frame 12 is equal to the inner diameter of the cross-sectional shape of the annular positioning groove 111, and the possibility of a gap between the tension frame 12 and the annular positioning groove 111 to cause a decrease in sealing performance is reduced. In the process of installing the socket pre-planting self-locking sealing ring 1 in the sealing positioning groove 221 of the socket end 22 in the embodiment of the application, the body part 11 is firstly installed in the sealing positioning groove 221, then the tension skeleton 12 is installed in the annular positioning groove 111 of the body part, as the tension skeleton 12 is in a tension state, radial outward acting force can be applied to the body part 11, at the moment, the part of the body part 11 positioned in the sealing positioning groove 221 can be extruded to deform, at the same time, a part of the tension skeleton 12 can enter the sealing positioning groove 221, at the moment, the outer diameter of the tension skeleton 12 is larger than the inner diameter of the socket end 22, so that the risk that the body part 11 is separated from the sealing positioning groove 221 is reduced.

Further, with continued reference to fig. 1 to 6, the first surface P1 extends along the axial direction of the socket pre-planted self-locking sealing ring 1 and is cylindrical; the body portion 11 further includes a second surface P2; along the axial direction of the socket pre-planting self-locking sealing ring 1, one end of the first surface P1 is connected with the second surface P2, and along the direction deviating from the first surface P1, the diameter of the second surface P2 is gradually reduced.

When the socket end 22 of one pipe body 2 and the socket end 21 of the other pipe body 2 are inserted, the socket end 21 is located on the radial inner side of the socket pre-planting self-locking sealing ring 1 in the embodiment of the application, and considering that the diameter of the second surface P2 gradually decreases along the direction deviating from the first surface P1, the second surface P2 is a round table surface, so that the part of the body part 11 corresponding to the second surface P2 is deformed and contacts with the socket end 21, so that the sealing between the socket end 21 and the body part 11 is realized. In addition, when the socket end 21 and the spigot end 22 are in off-axis connection, that is, the axis of the socket end 21 and the axis of the spigot end 22 are not completely coincident, in the circumferential direction of the spigot pre-planting self-locking sealing ring 1, the gap distance between the socket end 21 and the spigot end 22 is uneven, as the diameter of the second surface P2 gradually decreases along the direction deviating from the first surface P1, and the inner side of the body part 11 contacts with the outer diameter of the socket end 21, the body part 11 slides along the outer diameter of the socket end 21, and instead the body part 11 is pressed more strongly, so that the compression ratio of the sealing ring is increased, and the defect that the compression ratio is reduced and the sealing performance is invalid when the traditional connection mode of the socket fixing sealing ring is not concentric is exactly solved. At this time, because the socket end 21 is inserted and connected with the eccentric shaft, after the socket pre-planting self-locking sealing ring 1 in the embodiment of the application is deformed, the inner edge is elliptical, that is, the deformation of the body 11 is increased, and the sealing performance of the socket pre-planting self-locking sealing ring 1 in the embodiment of the application is improved.

Further, with continued reference to fig. 1-6, the body portion 11 further includes a third surface P3; the self-locking sealing ring 1 is pre-planted along the axial direction of the socket, and the third surface P3 is positioned at one side of the second surface P2 away from the first surface P1; the body 11 further includes a ratchet portion 112 disposed at a connection portion between the third surface P3 and the second surface P2, the ratchet portion 112 includes a wheel body 113 and a ratchet portion 114, the ratchet portion 114 is uniformly distributed on an outer surface of the wheel body 113, and the ratchet portion 114 is inclined along a direction from the second surface P2 to the second surface P2.

The ratchet portion 112 performs the same self-locking function. During the insertion of the two tubular bodies 2, the socket end 22 and the spigot end 21 move relatively, so that the ratchet wheel portion 112 tends to rotate in the direction from the inner surface to the first end 121. The thorn part 114 is inclined along the direction from the second surface P2 to the second surface P2, and the thorn part 114 may be slightly deformed by further inclination, so that the socket end 22 and the spigot end 21 can be smoothly inserted. After the two pipe bodies 2 are inserted, the ratchet part 112 is positioned at the gap between the socket end 22 and the spigot end 21 and generates certain deformation. When the two pipe bodies 2 generate a motion trend of disengaging, the socket end 22 and the spigot end 21 generate a reverse rotation trend to the ratchet part 112, and after the socket pre-planting self-locking sealing ring 1 in the embodiment of the application is made of elastic materials and the ratchet part 112 rotates by a certain angle, the theoretical total size of the second surface P2 and the ratchet part 112 along the radial direction can be gradually increased in the rotating process of the ratchet part 112, and the actual gap size between the spigot end 21 and the socket end 22 is fixed, so that the second surface P2 of the body 11 and the ratchet part 112 can be gradually compressed. When the socket end 21 and the spigot end 22 are subjected to relative movement with a disconnection trend, radial elastic forces generated by the socket end 21 and the spigot end 22 are overlapped, the volume of the body part 11 and the volume of the ratchet part 112 are overlapped, the compression limit of rubber is exceeded, and barbs of the socket are matched, so that the radial positive pressure between the spigot pre-planting self-locking sealing ring 1 and the socket end 21 and between the spigot end 22 is increased, the friction force between the spigot pre-planting self-locking sealing ring 1 and the socket end 21 and between the spigot pre-planting self-locking sealing ring 1 and the spigot end 22 is greatly improved, the movement of the socket end 21 relative to the spigot end 22 is further hindered, and the self locking of the two pipe bodies 2 is realized after the two pipe bodies are spliced.

Further, with continued reference to fig. 1 to 6, the cross-sectional shape of the socket pre-implantation self-locking seal ring 1 includes a first edge line L2, a second edge line L3, and a ratchet edge line L112; the first side line L2, the ratchet side line L112 and the second side line L3 are sequentially connected, the first side line L2 corresponds to the second surface P2, the ratchet side line L112 corresponds to the ratchet portion 112, and the second side line L3 corresponds to the third surface P3.

The cross-sectional shape of the present embodiment includes a first side line L2, a second side line L3, and a ratchet side line L112. The second surface P2 of the seal ring of the embodiment of the present application forms a first edge line L2 at a cross section, the third surface P3 forms a second edge line L3 at a cross section, and the ratchet portion 112 forms a ratchet edge line L112 at a cross section. The diameter of the second surface P2 is gradually reduced along the axial direction of the socket pre-planted self-locking sealing ring 1, and the angle formed by the first side line L2 and the second side line L3 is an acute angle.

Further, with continued reference to fig. 1 to 6, the body 11 further includes an embedded portion 115, and the embedded portion 115 is located on the outer side of the body 11 along the radial direction of the socket where the self-locking seal ring 1 is pre-planted; the insertion portion 115 is fitted inside the socket end 22; the embedded part 115 comprises a first protruding part 116, a second protruding part 117 and a first recessed part 118, the first recessed part 118 is positioned between the first protruding part 116 and the second protruding part 117 along the axial direction of the socket pre-planting self-locking sealing ring 1; along the radial direction of the socket pre-planting self-locking sealing ring 1, the first protruding part 116 and the second protruding part 117 extend outwards, and the orthographic projection of the annular positioning groove 111 overlaps with the first protruding part 116.

The embedded part 115 is located at the outer side of the socket pre-planting self-locking sealing ring 1 along the radial direction of the socket pre-planting self-locking sealing ring, and after the two pipe bodies 2 are inserted, the embedded part 115 can be embedded into the sealing positioning groove 221 of the socket end 22. The first protruding portion 116, the second protruding portion 117 and the first concave portion 118 are connected in proper order along the axial, and the first protruding portion 116 and the second protruding portion 117 all plant the radial outside of auto-lock sealing washer 1 along the bellmouth in advance and extend to the bellmouth surface in, that is to say, seal the constant head tank 221 can set up two deep grooves along the axial, and first protruding portion 116 and the protruding portion 117 of second imbeds respectively wherein, and the protruding portion between two deep grooves can imbed first concave portion 118, thereby improved the bellmouth of this application embodiment and planted the sealing effect and the sealing washer of auto-lock sealing washer 1 in advance, and strengthened the fixed capacity of 1 bellmouth ends of sealing washer. In addition, after the two pipe bodies 2 are inserted, if the socket end 22 and the spigot end 21 have a tendency to be separated, further, with continued reference to fig. 1 to 6, the body portion 11 further includes a fourth surface P4 and a fifth surface P5, the fourth surface P4 is located at one end of the body portion 11 along the axial direction of the socket where the self-locking seal ring 1 is pre-planted, and the first surface P1 is connected with the fourth surface P4; along the axial direction of the socket pre-planting self-locking sealing ring 1, one end of the fifth surface P5 is connected with the fourth surface P4, and the other end is connected with the first protruding part 116.

The fourth surface P4 forms an axial end face of the body portion 11, the first surface P1, the fourth surface P4 and the fifth surface P5 form protrusions along the axial direction, and a sufficient distance is added to the annular positioning groove 111 on one side, away from the ratchet portion 112, of the body portion 11 in the axial direction, so that when the body portion 11 receives the acting force of the tension skeleton 12, the annular positioning groove 111 cannot be obviously deformed on one side, away from the ratchet portion 112, of the body portion 11 in the axial direction, and the socket pre-planting self-locking sealing ring 1 has good sealing capability.

With continued reference to fig. 1 to 4, an embodiment of the present application further provides an insertion tube, including: at least one pipe body 2, the pipe body 2 comprising a socket end 22 and a spigot end 21, wherein the spigot end 21 of one pipe body 2 is spliced with the socket end 22 of an adjacent pipe body 2; the inner surface of the socket end 22 is provided with a sealing positioning groove 221; the socket of the foregoing embodiment is pre-planted with the self-locking sealing ring 1, which is located at the plugging position of two adjacent pipe bodies 2, and at least part of the socket is pre-planted with the self-locking sealing ring 1 embedded into the sealing positioning groove 221.

In the embodiment of the application, two adjacent pipe bodies 2 are spliced, and the socket of the previous embodiment of the application is used for pre-planting the self-locking sealing ring 1 for sealing and self-locking during splicing. When two adjacent pipe bodies 2 are spliced, the socket end 21 of one pipe body 2 is inserted into the socket end 22 of the other pipe body 2 along the axial direction of the socket pre-planting self-locking sealing ring 1, the inner surface of the socket end 22 is provided with a sealing positioning groove 221, at least part of the socket pre-planting self-locking sealing ring 1 is embedded into the sealing positioning groove 221, the ratchet wheel part 112 of the self-locking sealing positioning groove 221 is abutted with the socket end 21 to realize sealing between the two pipe bodies 2, the ratchet wheel part 112 is clamped on the inner surface of the socket end 22 and the outer surface of the socket end 21, when the socket end 21 and the socket end 22 are subjected to relative movement with a disconnecting trend, the body part 11 of the socket pre-planting self-locking sealing ring 1 comprises the ratchet wheel part 112 which is compressed in the radial direction, and the generated radial elastic force after the body part 11 is compressed, so that the radial direction between the socket pre-planting self-locking sealing ring 1 and the socket end 21 and the socket end 22 is increased, the friction force between the socket pre-planting self-locking sealing ring 1 and the socket end 21 and the socket end 22 is greatly improved, and the friction force between the socket end 21 and the socket end 22 is further hindered, and the socket end 21 is prevented from moving towards the opposite directions of the socket end 22, and the socket end 22 is opposite to realize self-locking of the socket end 2. Before the adjacent two pipe bodies 2 are spliced, the body part 11 of the socket pre-planting self-locking sealing ring 1 is installed in the sealing positioning groove 221 of the socket end 22, the tension skeleton 12 is installed in the annular positioning groove 111 of the body part 11, and then the socket end 21 is inserted into the socket end 22. The pipe body 2 may be, for example, a concrete pipe, a ball-milled cast iron pipe, a Polyethylene (PE) plastic pipe or a polyvinyl chloride (PVC) plastic pipe.

Fig. 7 is a schematic view of a socket end of a pipe body of a socket according to an embodiment of the present application.

Further, referring to fig. 7, the outer surface of the socket end 21 is provided with a plurality of annular grooves 211, and the annular grooves 211 are arranged along the axial direction of the socket pre-planting self-locking sealing ring 1; the annular groove 211 is inclined in the direction from the spigot end 21 to the socket end 22 along the axial direction of the socket pre-planting self-locking sealing ring 1.

During the process of inserting the spigot end 21 into the socket end 22, the outer surface of the spigot end 21 is contacted with the ratchet part 112 of the socket pre-planting self-locking sealing ring 1, and the thorn part 114 of the ratchet part 112 is inserted into the annular groove 211 of the spigot end 21. Since the annular groove 211 is also inclined in an inclined arrangement, a part of the ratchet portion 114 of the ratchet portion 112 can be fitted into the annular groove 211. When the pipe body 2 receives an axial external force, the socket end 21 moves reversely relative to the socket pre-planting self-locking sealing ring 1, the thorn part 114 interacts with the annular groove 211 on the surface of the socket end 21, sliding cannot be formed, the ratchet part 112 is forced to present a rolling trend on the surface of the socket end 21, the rolling trend of the ratchet part 112 greatly increases the volume of the socket pre-planting self-locking sealing ring 1 between the socket end 22 and the socket end 21, the compression ratio of the socket pre-planting self-locking sealing ring 1 is increased instantaneously until reaching the compression limit and cannot be compressed again, the relative movement trend generated by the two pipe bodies 2 is opposite to the inclination direction of the thorn part 114, the thorn part 114 overlaps with the body part 11, the socket end 22 and the socket end 21 are locked, and the continuous relative movement of the two pipe bodies 2 is blocked, so that the self-locking capability of the connecting pipe in the embodiment of the application can be improved.

In summary, the embodiment of the application provides a socket pre-planting self-locking sealing ring and an insertion pipe. The socket is planted in advance between the two mutually spliced pipe bodies of the self-locking sealing ring, the annular body part can be embedded into the sealing positioning groove at the socket end, the tension framework is embedded into the annular positioning groove at the radial inner side of the body part, the tension framework generates radial outward acting force on the body part, the body part is pressed in the sealing positioning groove, and therefore the possibility that the socket is planted in advance and the self-locking sealing ring is separated from the sealing positioning groove when the socket end and the socket end are spliced is reduced. When the tension framework is installed, the first end and the second end of the tension framework can be arranged in a staggered mode, so that the installation is convenient. After installation, the first and second ends of the tension frame abut to maintain the tension frame in a radially outward tension. The sliding sleeve can limit the first end and the second end, when the tension framework is acted by external force, the first end and the second end can also be kept in a propped state, so that the tension framework maintains a radial outward tension state, the body part is tightly pressed in the sealing positioning groove, and the risk of sealing failure caused by the fact that the sealing ring is separated is reduced.

While the invention has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. The socket pre-planting self-locking sealing ring is used for sealing between the socket end of one pipe body and the socket end of the other pipe body, and is characterized in that the socket pre-planting self-locking sealing ring is fixedly connected with the socket end;

the socket is planted in advance and is locked the sealing washer includes:

the annular body part comprises a first surface, and the first surface faces the radial inner side of the socket pre-planting self-locking sealing ring; the first surface is provided with a concave annular positioning groove;

an annular tension skeleton, at least part of which is positioned in the annular positioning groove; the tension framework comprises a first end and a second end, and the first end and the second end are abutted; the first end is provided with a first positioning hole perpendicular to the extension direction of the tension framework;

the sliding sleeve is sleeved on the tension framework and is in sliding connection with the tension framework; the sliding sleeve is provided with a second positioning hole perpendicular to the extension direction of the tension framework;

and the locating pin is inserted into the first locating hole and the second locating hole.

2. The socket pre-implant self-locking seal of claim 1, wherein the sliding sleeve wraps around the abutment of the first end and the second end.

3. The socket pre-planting self-locking sealing ring according to claim 1, wherein a cross section perpendicular to the extending direction of the socket pre-planting self-locking sealing ring is circular in cross section shape, the annular positioning groove is semicircular in cross section shape, and the outer diameter of the cross section shape of the tension skeleton is equal to the inner diameter of the cross section shape of the annular positioning groove.

4. The socket pre-implant self-locking seal ring according to claim 1, wherein the first surface extends along the axial direction of the socket pre-implant self-locking seal ring and is cylindrical;

the body portion further includes a second surface; along the axial direction of the socket pre-planting self-locking sealing ring, one end of the first surface is connected with the second surface, and along the direction deviating from the first surface, the diameter of the second surface is gradually reduced.

5. The socket pre-implant self-locking seal of claim 4, wherein the body portion further comprises a third surface; the third surface is positioned at one side of the second surface far away from the first surface along the axial direction of the socket pre-planted self-locking sealing ring;

the body part further comprises a ratchet part which is arranged at the joint of the third surface and the second surface, the ratchet part comprises a wheel body part and a thorn part, the thorn part is uniformly distributed on the outer surface of the wheel body part, and the thorn part is inclined along the direction from the second surface to the second surface.

6. The socket pre-implant self-locking seal ring of claim 5, wherein a cross-sectional shape of the socket pre-implant self-locking seal ring comprises a first edge, a second edge, and a ratchet edge; the first side line, the ratchet side line and the second side line are sequentially connected, the first side line corresponds to the second surface, the ratchet side line corresponds to the ratchet part, and the second side line corresponds to the third surface.

7. The socket pre-implantation self-locking seal ring of claim 1, wherein the body portion further comprises an embedded portion, the embedded portion being located radially outward of the body portion along the socket pre-implantation self-locking seal ring; the embedded part is embedded with the inner side of the socket end;

the embedded part comprises a first protruding part, a second protruding part and a first recessed part, the first recessed part is positioned between the first protruding part and the second protruding part along the axial direction of the socket pre-planting self-locking sealing ring; the first protruding portion and the second protruding portion extend outwards along the radial direction of the socket pre-planting self-locking sealing ring, and orthographic projection of the annular positioning groove is overlapped with the first protruding portion.

8. The socket pre-implant self-locking seal of claim 7, wherein the body portion further comprises a fourth surface and a fifth surface, the fourth surface being located at an axial end of the body portion along the socket pre-implant self-locking seal, the first surface being connected to the fourth surface; and one end of the fifth surface is connected with the fourth surface, and the other end of the fifth surface is connected with the first protruding part along the axial direction of the socket pre-planted self-locking sealing ring.

9. A plug tube, comprising:

at least one pipe body comprising a socket end and a spigot end, wherein the spigot end of one pipe body is spliced with the socket end of the adjacent pipe body; the inner surface of the socket end is provided with a sealing positioning groove;

the socket pre-planting self-locking sealing ring according to any one of claims 1 to 8, which is positioned at the splicing position of two adjacent pipe bodies, wherein at least part of the socket pre-planting self-locking sealing ring is embedded with the sealing positioning groove.

10. The plug tube according to claim 9, wherein the outer surface of the socket end is provided with a plurality of annular grooves, and the annular grooves are arranged in an axial direction of the socket pre-planted self-locking sealing ring; and the annular groove is inclined towards the direction from the socket end to the socket end along the axial direction of the socket pre-planted self-locking sealing ring.