CN211289148U

CN211289148U - Sealed retaining self-locking socket pipe joint

Info

Publication number: CN211289148U
Application number: CN201921901091.0U
Authority: CN
Inventors: 曹能健
Original assignee: Shanghai Ruihuang Pipe Technology Co ltd
Current assignee: Shanghai Ruihuang Pipe Technology Co ltd
Priority date: 2019-11-06
Filing date: 2019-11-06
Publication date: 2020-08-18
Anticipated expiration: 2029-11-06

Abstract

The utility model relates to a sealed stopping self-locking socket pipe joint, which comprises a plug and a bearing head which are connected with a pipe body, wherein the plug and the bearing head are both provided with inner holes, and the bearing head is provided with a jack for inserting the plug; the plug and the bearing head are provided with a concave-convex matched retaining structure, the retaining structure comprises a convex part and a concave part, and a sealing ring is arranged between the plug and the bearing head and used for sealing a gap between the plug and the jack. The plug and the socket are respectively connected to two ends of the pipe body, so that when adjacent pipes are spliced, the plug is inserted into the socket, and after the plug is inserted, the stopping structure connects the plug and the socket to form a self-locking structure to provide axial resistance, so that the plug is prevented from being separated from the socket; the retaining structure comprises a convex part and a concave part, and after the plug is inserted into the socket, the convex part is matched with the concave part to form the retaining structure; in order to ensure the sealing of the pipe connection part, a sealing ring is arranged between the plug and the socket head, the sealing of the splicing part is realized through the sealing ring, and the sealing ring generally comprises radial sealing and axial sealing.

Description

Sealed retaining self-locking socket pipe joint

Technical Field

The utility model relates to a coupling, especially a sealed stopping auto-lock socket joint coupling.

Background

With the development of technology, the laying of pipe networks becomes an important project for town construction in the process of town construction, and concrete pipelines are gradually replaced by plastic pipelines due to the defects of the concrete pipelines.

The laid pipelines are relatively long, and although the plastic pipelines can be processed and manufactured to be relatively long, the plastic pipelines also have proper lengths in consideration of face changing in production, storage, transportation and laying. The plastic needs to be spliced one by one in the laying process, but the splicing is mostly carried out on site, and the conventional splicing mostly adopts hot melt butt joint, electric hot melt or thermal contraction and the like, so that hot melt equipment needs to be prepared on site, and meanwhile, a power supply needs to be switched on for normal operation of the equipment, thereby bringing great troubles to the laying.

There is a need for a non-heat-fusible way to splice pipes.

Disclosure of Invention

The utility model provides a sealed stopping auto-lock socket pipe joint adopts the mode of socket joint to realize plastic conduit's concatenation, through setting up the plug and the cushion cap of connecting the body, can realize the concatenation of socket joint formula at the scene, sets up the sealing washer at the socket joint position simultaneously, realizes sealing after the plastic conduit concatenation, sets up wedge-shaped stopping structure at the socket joint position simultaneously, realizes the auto-lock behind the plastic conduit socket joint, improves pipeline axial resistance.

The utility model discloses a concrete technical scheme does: a sealed stop self-locking socket pipe joint comprises a plug and a socket head which are connected with a pipe body, wherein the plug and the socket head are both provided with inner holes, and the socket head is provided with a jack for inserting the plug; the plug and the bearing head are provided with a concave-convex matched retaining structure, the retaining structure comprises a convex part and a concave part, and a sealing ring is arranged between the plug and the bearing head and used for sealing a gap between the plug and the jack.

The plug and the socket are respectively connected to two ends of the pipe body, the socket is provided with an insertion hole, and the size and the shape of the insertion hole are suitable for the plug to be inserted, so that when adjacent pipes are spliced, the plug is inserted into the socket, and after the plug is inserted, the stop structure connects the plug and the socket to form a self-locking structure to provide axial resistance, and the plug is prevented from being separated from the socket; the retaining structure comprises a convex part and a concave part, and after the plug is inserted into the socket, the convex part is matched with the concave part to form the retaining structure; in order to ensure the sealing of the pipe connection part, a sealing ring is arranged between the plug and the socket head, the sealing of the splicing part is realized through the sealing ring, and the sealing ring generally comprises radial sealing and axial sealing.

Preferably, the retaining structure is realized by matching the plug and the socket, namely a convex part or a concave part is arranged on the plug, and a concave part or a convex part is arranged in the socket; or the retaining structure is realized by the cooperation of the plug, the socket and a third component between the plug and the socket, namely, a concave part or a convex part is arranged on the plug, a convex part or a concave part is arranged on the inner surface of the third component, a convex part or a concave part is arranged on the outer surface of the third component, and a concave part or a convex part is arranged in the socket.

Preferably, the plug is provided with a plurality of mutually parallel convex parts on the outer surface, the axial cross section of the convex parts is triangular, wherein one side facing the insertion socket is an inclined plane, one side opposite to the insertion socket is a radial plane, the inner wall of the insertion hole of the socket is provided with a plurality of mutually parallel concave parts, the axial cross section of the concave parts is triangular, and the shape of the concave parts is matched with that of the convex parts.

Preferably, the third part is a ring-shaped colloid, the outer surface of the plug comprises two sections of butted conical surfaces, the small diameter ends of the conical surfaces are opposite and in the middle, the inner wall of the jack comprises two sections of butted conical surfaces, the large diameter ends of the conical surfaces are opposite and in the middle, the plug is inserted into the jack to form a cavity with variable thickness, and the third part is located in the cavity. The third part is colloid, and after the third part is sleeved outside the plug and matched with the jack, the third part can be used as a sealing ring.

Further preferably, the third member has a convex portion on an inner surface and an outer surface thereof, a concave portion on an inner wall of the insertion hole, and a concave portion on an outer surface of the plug, and the convex portion and the concave portion have triangular cross sections that are fitted to each other.

Preferably, the plug comprises a pipe body connecting part and a plug part, the outer surface of the plug part is columnar, the convex part protrudes outwards from the columnar outer surface, the socket comprises a pipe body connecting part and a socket part, the jack is located in the socket part, the jack is columnar, the columnar of the jack is matched with the columnar of the plug part, and the concave part is recessed inwards from the columnar surface of the jack.

Preferably, the root position of the convex part on the plug is provided with a deformation cavity, the deformation cavity is positioned at one side of the convex part back to the insertion bearing head, an elastic ring is embedded in the deformation cavity, the shape of the elastic ring is matched with that of the deformation cavity, and the side of the convex part back to the insertion bearing head after the elastic ring is embedded keeps a plane. The root of the convex part is provided with a deformation cavity, and when the plug is inserted into the jack, the convex part can deform, so that the assembly is convenient; the elastic ring is embedded in the deformation cavity, when the convex part deforms, the elastic ring is compressed, so that more restoring force can be provided, and after the convex part is matched with the concave part, the elastic ring can also play a sealing role.

Preferably, the deformation cavity is triangular, the deformation cavity is in an annular structure at the convex part, the inner surface of the ring is a cylindrical surface on the outer surface of the plug insertion part, and the cross section of the elastic ring is triangular.

Preferably, the deformation cavity is further provided with an annular groove, the annular groove extends into the columnar surface of the plug insertion part, the axial length of the annular groove is larger than the axial depth of the deformation cavity at the convex part, the elastic ring is provided with a rectangular ring and a triangular ring, and the rectangular ring is sleeved in the annular groove.

Preferably, the sealing rings are divided into an axial sealing ring and a radial sealing ring, an axial concave ring is arranged at the end part of the plug, the radial sealing ring is embedded into the concave ring, the axial sealing ring is sleeved on the outer surface of the plug, the plug is inserted into the jack, the radial sealing ring seals a radial gap between the end part of the plug and the inner part of the socket head, and the axial sealing ring seals an axial gap between the plug and the socket head.

The utility model has the advantages that: the plug and the socket are respectively connected to two ends of the pipe body, the socket is provided with an insertion hole, and the size and the shape of the insertion hole are suitable for the plug to be inserted, so that when adjacent pipes are spliced, the plug is inserted into the socket, and after the plug is inserted, the stop structure connects the plug and the socket to form a self-locking structure to provide axial resistance, and the plug is prevented from being separated from the socket; the retaining structure comprises a convex part and a concave part, and after the plug is inserted into the socket, the convex part is matched with the concave part to form the retaining structure; in order to ensure the sealing of the pipe connection part, a sealing ring is arranged between the plug and the socket head, the sealing of the splicing part is realized through the sealing ring, and the sealing ring generally comprises radial sealing and axial sealing.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of a plug structure of the present invention;

FIG. 3 is a schematic view of a structure of a socket of the present invention;

FIG. 4 is a second structural schematic diagram of the present invention;

FIG. 5 is a third schematic structural diagram of the present invention;

FIG. 6 is a fourth structural diagram of the present invention;

FIG. 7 is a schematic view of the structure of the plug and socket of FIG. 6 according to the present invention;

in the figure: 1. the sealing device comprises an inner hole, 2, a plug, 3, a socket, 4, an axial sealing ring, 5, a convex part, 6, a concave part, 7, a radial sealing ring, 8, a pipe body connecting part, 9, a plug-in part, 10, an axial sealing groove, 11, a concave ring, 12, a deformation cavity, 13, an elastic ring, 14, an annular groove, 15, a rectangular ring, 16, a third component, 17 and a containing cavity.

Detailed Description

The invention will be further described with reference to specific embodiments and with reference to the accompanying drawings.

Example 1:

as shown in fig. 1, fig. 2 and fig. 3, the sealed retaining self-locking socket pipe joint comprises a plug 2 and a socket 3 which are connected with a pipe body, wherein the plug and the socket are respectively provided with an inner hole 1, and the inner holes are communicated with the inner hole of the pipe body, coaxial and in the same diameter.

The plug comprises a pipe body connecting part 8 and an inserting part 9, the outer diameter of the pipe body connecting part is larger than that of the inserting part, the outer surface of the inserting part is columnar, and an inner hole is communicated with the two axial ends of the plug. The socket comprises a pipe body connecting part 8 and a socket part, the socket part is provided with a jack for inserting the plug, the outer diameter of the jack is larger than that of the inner hole, the axial length of the jack is smaller than that of the socket, and the axial length of the jack is larger than that of the plug inserting part. The plug and the bearing head are provided with a concave-convex matched retaining structure, the retaining structure comprises a convex part and a concave part, and a sealing ring is arranged between the plug and the bearing head and used for sealing a gap between the plug and the jack.

The convex part 5 is arranged on the columnar outer surface of the plug plugging part, the convex parts are three and are parallel to each other, the axial section of the convex part is triangular, one side facing the end part of the plugging part is an inclined plane, and one side facing the pipe body connecting part is a radial plane vertical to the axis of the plug. The column shape of the insertion part between the pipe body insertion part and the adjacent first convex part is externally provided with a radial sealing groove, and the cross section of the sealing groove is rectangular. The end face mountain of the insertion part is provided with a circle of axial concave rings 11, the cross sections of the concave rings are rectangular, the inner diameters of the concave rings are smaller than the diameter of the inner hole of the insertion part, and the outer diameters of the concave rings are smaller than the cylindrical outer diameter of the insertion part. The inner wall of the socket head jack is provided with a radial sealing groove, the cross section of the sealing groove is rectangular, the inner wall of the jack between the sealing groove and the pipe body connecting part is provided with three concave parts 6 which are parallel to each other, and the shape of the concave parts is matched with that of the convex parts. The plug part is inserted into the jack, a convex part on the outer surface of the plug part is matched with a concave part on the inner wall of the jack, a sealing groove on the plug part and a sealing groove on the inner wall of the jack are positioned at the same axial position, two rectangular sealing grooves form a large rectangular sealing groove, an axial sealing ring 4 is embedded into the rectangular sealing groove, and the axial sealing ring seals an axial gap between the plug and the bearing head. The radial sealing ring 7 is embedded into the concave ring at the end part of the insertion part, the insertion part is inserted into the jack, and the radial sealing ring is abutted and extruded with the side surface of the body connecting part in the bearing head so as to seal the radial gap between the end part of the plug and the inner part of the bearing head.

Example 2:

as shown in fig. 4, the difference between a sealed and non-return self-locking female pipe joint and the embodiment 1 is that: the root position of the convex part on the cylindrical outer surface of the plug part is provided with a deformation cavity 12, the deformation cavity is positioned at one side of the convex part back to the inserted bearing head, the radial surface where the convex part is positioned is an opening of the deformation cavity, and the cross section of the deformation cavity is triangular. An elastic ring 13 is embedded in the deformation cavity, the shape of the elastic ring is matched with that of the deformation cavity, and one side of the convex part back to the inserted bearing head after the elastic ring is embedded keeps a plane, namely the elastic ring cannot protrude out of the radial surface of the convex part. The inclined surface of the deformable cavity is parallel to the outer inclined surface of the protrusion, i.e. the protrusion remains equally thick. The rest of the structure is referred to example 1.

Example 3:

as shown in fig. 5, the difference between a sealed and non-return self-locking female pipe joint and the embodiment 2 is that: the deformation chamber is also provided with an annular groove 14 at the inner side of the triangle, the annular groove extends into the cylindrical surface of the plug insertion part, the axial length of the annular groove is greater than the axial depth of the deformation chamber at the convex part, and one end (the left end in fig. 5) of the annular groove extends out of the radial surface of the convex part. The elastic ring of embedding deformation chamber has rectangle circle 15 and triangle circle, and the rectangle circle is in the annular groove, and the triangle circle is in the convex part, and the left side plane of triangle circle is level and level with the radial face of convex part, and the thickness of rectangle circle equals with the degree of depth of annular groove. The rest of the structure is referred to example 2.

Example 4:

as shown in fig. 6 and 7, the difference between the sealing and retaining self-locking female pipe joint and the embodiment 1 is that: the retaining structure is realized by the cooperation of the plug, the bearing head and a third part between the plug and the bearing head.

The appearance of grafting portion is non-columnar structure, and the outward appearance of grafting portion includes the toper face of two sections docks, and the minor diameter end of toper face is relative and be in the intermediate position, and the inner wall of jack includes the toper face of two sections docks, and the major diameter end of toper face is relative and be in the intermediate position, and the plug inserts and forms the appearance chamber 17 that the thickness changes in the jack. Three mutually parallel concave parts 6 are arranged on the conical surface of the outer surface of the insertion part close to the pipe body connecting part, three mutually parallel concave parts 6 are arranged on the conical surface of the inner wall of the insertion hole close to the pipe body connecting part, and the concave parts on the insertion part and the inner wall of the insertion hole are positioned on the staggered conical surfaces. The cross section of the concave part on the plug part is triangular, wherein the inclined plane of the outer side faces to one side of the pipe body connecting part of the plug, and the radial plane faces to one side of the end part of the plug part. The cross section of the concave part in the jack is triangular, wherein the inclined plane faces to one side of the pipe body connecting part of the bearing head, and the radial plane faces to one side of the insertion end of the jack.

A third part 16 is arranged in the containing cavity, the third part is a ring-shaped colloid, and the third part is also used as an axial sealing ring between the plug and the socket. The thickness of the third component is of a variable structure in the axial direction, the thickness of the middle part is the largest, and the thickness of the middle part is gradually reduced from the middle part to two sides. The inner surface and the outer surface of the third component are provided with convex parts 5, the shape of the convex part of the outer surface is matched with the concave part of the inner wall of the inserting hole, and the shape of the convex part of the inner surface is matched with the concave part of the outer surface of the inserting part. The plug is inserted into the bearing head, the third part is positioned between the outer surface of the insertion part and the inner wall of the insertion hole, and the convex part is matched with the corresponding concave part to form a backstop self-locking structure. The rest of the structure is referred to example 1.

The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and equivalent transformation of doing above embodiment the utility model discloses technical scheme's protection scope.

Claims

1. A sealed retaining self-locking socket pipe joint is characterized by comprising a plug (2) and a socket head (3) which are connected with a pipe body, wherein the plug and the socket head are both provided with inner holes (1), and the socket head is provided with a jack for inserting the plug; a concave-convex matched retaining structure is arranged between the plug and the bearing head, the retaining structure comprises a convex part (5) and a concave part (6), and a sealing ring is arranged between the plug and the bearing head and used for sealing a gap between the plug and the jack.

2. The sealed and anti-backing self-locking female pipe joint as claimed in claim 1, wherein the anti-backing structure is realized by the cooperation between the male plug and the female plug, i.e. a convex part or a concave part is arranged on the male plug, and a concave part or a convex part is arranged in the female plug; or the retaining structure is realized by the cooperation of the plug, the socket and a third component (16) between the plug and the socket, namely, a concave part or a convex part is arranged on the plug, a convex part or a concave part is arranged on the inner surface of the third component, a convex part or a concave part is arranged on the outer surface of the third component, and a concave part or a convex part is arranged in the socket.

3. The sealed anti-backing self-locking female pipe joint as claimed in claim 2, wherein the plug is externally provided with a plurality of mutually parallel convex portions, the axial cross section of the convex portions is triangular, wherein one side facing the insertion socket is an inclined surface, the side opposite to the insertion socket is a radial surface, the inner wall of the insertion hole of the socket is provided with a plurality of mutually parallel concave portions, the axial cross section of the concave portions is triangular, and the shape of the concave portions is matched with that of the convex portions.

4. The sealed anti-backing self-locking female pipe joint as claimed in claim 2, wherein the third member is a ring-shaped rubber body, the outer surface of the male pipe comprises two sections of butted tapered surfaces, the small diameter ends of the tapered surfaces are opposite and in the middle, the inner wall of the female hole comprises two sections of butted tapered surfaces, the large diameter ends of the tapered surfaces are opposite and in the middle, the male pipe is inserted into the female hole to form a cavity (17) with a variable thickness, and the third member is arranged in the cavity.

5. The sealed and anti-backing self-locking female pipe joint as claimed in claim 4, wherein the inner and outer surfaces of the third member are provided with protrusions, the inner wall of the female pipe is provided with a recess, the outer surface of the male pipe is provided with a recess, and the cross sections of the protrusions and the recesses are triangular shapes which are matched with each other.

6. The sealed anti-return self-locking female pipe joint according to claim 1, 2 or 3, wherein the male plug comprises a pipe body connecting part (8) and a male connecting part (9), the male connecting part is cylindrical, the convex part protrudes from the cylindrical outer surface, the female plug comprises a pipe body connecting part and a female connecting part, the jack is positioned in the female connecting part, the jack is cylindrical, the cylindrical shape of the jack is matched with the cylindrical shape of the male connecting part, and the concave part is recessed from the cylindrical surface of the jack.

7. The sealed and anti-backing self-locking female pipe joint as claimed in claim 6, wherein the root of the convex part on the male plug is provided with a deformation cavity (12), the deformation cavity is arranged at one side of the convex part, which is back to the male socket, an elastic ring (13) is embedded in the deformation cavity, the shape of the elastic ring is matched with that of the deformation cavity, and the side, which is back to the male socket, of the convex part after the elastic ring is embedded keeps a plane.

8. The sealed and anti-backing self-locking female pipe joint as claimed in claim 7, wherein the deformation chamber is triangular, the deformation chamber is annular at the convex portion, the inner surface of the ring is a cylindrical surface of the outer surface of the male plug portion, and the cross section of the elastic ring is triangular.

9. The sealed and anti-backing self-locking female pipe joint as claimed in claim 8, wherein the deformation chamber further has an annular groove (14) which extends into the cylindrical surface of the male plug mating part, the axial length of the annular groove is greater than the axial depth of the deformation chamber at the male part, and the elastic ring has a rectangular ring (15) and a triangular ring, the rectangular ring being nested in the annular groove.

10. The sealed anti-return self-locking female pipe joint according to claim 1, 2, 3, 4 or 5, characterized in that the sealing rings are divided into an axial sealing ring (4) and a radial sealing ring (7), the end of the plug is provided with an axial concave ring (11), the radial sealing ring is embedded into the concave ring, the axial sealing ring is sleeved on the outer surface of the plug, the plug is inserted into the jack, the radial sealing ring seals the radial gap between the end of the plug and the inner part of the socket, and the axial sealing ring seals the axial gap between the plug and the socket.