CN216430852U

CN216430852U - Sealing structure for joint of drain pipe

Info

Publication number: CN216430852U
Application number: CN202122306548.7U
Authority: CN
Inventors: 朱建华; 李志祥; 傅蒙; 陈飞
Original assignee: Anhui Yongzheng Seal Co ltd
Current assignee: Anhui Yongzheng Seal Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-05-03
Anticipated expiration: 2031-09-23

Abstract

The utility model discloses a drain pipe joint sealing structure, a built-in sealing ring is arranged in a pipe socket, a pipe socket is inserted in the inner wall of the pipe socket, one side of the built-in sealing ring is fixedly connected with a triangular block, one side of the triangular block is provided with a sawtooth wave crest, the sawtooth wave crest is close to one side of a pipe orifice of the pipe socket, when the pipe socket is inserted, the sawtooth wave crest is firstly contacted with the outer wall of the pipe socket, friction force is generated between the sawtooth wave crest and the outer wall of the pipe socket, the firmness of the connection between the pipe socket and the pipe socket is ensured, the reliability of water closing of the joint is increased, the other side of the triangular block is arranged as a wave crest buffering surface, the wave crest buffering surface reserves a certain space after the extrusion deformation of the sawtooth wave crest, the resistance given by the sawtooth wave crest when the pipe socket is inserted is reduced, a hoop steel skeleton is arranged in the built-in sealing ring, the hoop steel skeleton is mainly formed by bending and welding a high-carbon steel bar, and rubber is added for vulcanization.

Description

Sealing structure for joint of drain pipe

Technical Field

The utility model relates to a rubber seal technical field, concretely relates to drain pipe connection department seal structure.

Background

The PVC-UH drain pipe is an indispensable material in domestic sewage and industrial wastewater discharge, and is widely used by people because polyvinyl chloride is used as a raw material and is a novel polymer obtained by chemical combination. In use, there are three common connection modes: the steel skeleton built-in rubber ring mainly has the defects that the built-in rubber ring is easy to fall off after being mounted, the rubber ring is not tightly attached to the pipe wall after being mounted, the socket water-closing performance of a pipe after being mounted is poor, the Rockwell hardness corresponding to each region position of the rubber ring is inconsistent, the service life of the rubber ring is short due to the uncertainty of sewage and the like.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a drain pipe connection department seal structure to reach following technological effect:

an annular steel skeleton is pre-embedded in the rubber sealing ring, so that the supporting force of the rubber sealing ring is ensured, and the water closing effect after installation is improved; the mounting structure of the sealing ring is optimized, the sealing ring can be attached to the pipe wall after being mounted, and the sealing ring is not easy to fall off and shift in the mounting process.

The purpose of the utility model can be realized by the following technical scheme:

the utility model provides a drain pipe junction seal structure, includes tubular product bellmouth and tubular product socket, tubular product bellmouth internally mounted has built-in sealing washer, the tubular product socket is pegged graft at tubular product bellmouth inner wall, the inner circle of built-in sealing washer and the outside looks butt of tubular product socket.

As a further aspect of the present invention: the built-in sealing washer is the triangle-shaped structure, three hornblocks of one side fixedly connected with of built-in sealing washer, wherein one side of three hornblocks is provided with the sawtooth crest, and the sawtooth crest is close to the mouth of pipe one side of tubular product bellmouth, when the tubular product socket inserts, at first contacts with the outer wall of tubular product socket, produces frictional force between its outer wall with the tubular product socket, has both guaranteed the fastness that tubular product bellmouth and tubular product socket are connected, has also increased the reliability that the junction closed water simultaneously, three hornblocks's opposite side sets up to crest buffering face, and crest buffering face reserves certain space after for the extrusion deformation of sawtooth crest, and the reduction sawtooth crest gives great resistance when grafting tubular product socket.

As a further aspect of the present invention: the built-in sealing ring is characterized in that an annular steel skeleton is arranged inside the built-in sealing ring, the annular steel skeleton is mainly formed by bending, welding and additionally arranging rubber for vulcanization through a high-carbon steel bar, and the built-in sealing ring cannot displace or fall off under the action of annular supporting force of the annular steel skeleton.

As a further aspect of the present invention: one side of the built-in sealing ring, which is far away from the wave crest of the sawtooth, is provided with an outer attaching surface, and the outer attaching surface is closely attached to the inner wall of the pipe socket so as to achieve the water closing effect.

As a further aspect of the present invention: the pipe bellmouth is provided with the arch in the junction, bellied inner wall and the outer wall of built-in sealing washer are laminated mutually for at installation pipe socket, built-in sealing washer receive the extrusion back in the arch, do not take place to shift, guarantee the validity of installation.

As a further aspect of the present invention: the middle section of the pipe bellmouth is provided with a bayonet, and the end surface of the pipe spigot is abutted against the bayonet.

The utility model has the advantages that:

1. the steel skeleton and the rubber are used in a combined mode, so that certain strength of the rubber ring in the circumferential direction is guaranteed, and the sealing ring is not prone to falling off after being installed at the pipe bellmouth;

2. the design of the joint between the sealing ring and the pipe ensures that the sealing ring can be jointed with the pipe socket and the pipe socket to the maximum extent, and ensures the water-tight property of the joint.

3. The special treatment process of the steel skeleton ensures that the steel skeleton and the sealing ring are tightly bonded together after the vulcanization process, thereby effectively prolonging the service life of the sealing ring;

4. one side of the sealing ring is provided with wave crest sawteeth, so that the pipe bell and spigot is not easy to fall off after installation;

5. in the installation, at first install built-in sealing washer in protruding, with tubular product socket end outer wall clean up, insert tubular product socket to the tubular product bellmouth again, until tubular product socket and bayonet socket looks butt, this connected mode directly peg graft can, simple to operate and firm in connection.

Drawings

The present invention will be further described with reference to the accompanying drawings.

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

FIG. 2 is a schematic structural view of the region A in FIG. 1;

fig. 3 is a schematic view of the structure of the built-in sealing ring of the present invention.

In the figure: 1. a pipe bell mouth; 101. a bayonet; 102. a protrusion; 2. a pipe socket; 3. a sealing ring is arranged inside; 301. a sawtooth wave crest; 302. a wave crest buffering surface; 303. an outer bonding surface; 4. and (3) a circumferential steel framework.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Please refer to fig. 1, the utility model relates to a drain pipe connection department seal structure, including tubular product bellmouth 1 and

tubular product socket

2, 1 internally mounted of tubular product bellmouth has built-in sealing washer 3, and tubular product socket 2 pegs graft at 1 inner wall of tubular product bellmouth, and the inner circle of built-in sealing washer 3 and the outside looks butt of tubular product socket 2.

Referring to fig. 2, the built-in sealing ring 3 is triangular, the built-in sealing ring 3 is made of ethylene propylene diene monomer and highly wear-resistant carbon black, the ethylene propylene diene monomer has the characteristics of high and low temperature resistance, excellent aging resistance, and good alkali and weak acid resistance, one side of the built-in sealing ring 3 is fixedly connected with a triangular block, one side of the triangular block is provided with a sawtooth wave crest 301, the sawtooth wave crest 301 is close to one side of the pipe orifice of the pipe socket 1, when the pipe socket 2 is inserted, the sawtooth wave crest is firstly contacted with the outer wall of the pipe socket 2, friction force is generated between the sawtooth wave crest and the outer wall of the pipe socket 2, the firmness of connection between the pipe socket 1 and the pipe socket 2 is ensured, meanwhile, the reliability of water closure at the connection part is also increased, the other side of the triangular block is provided with a wave crest buffering surface 302, and certain buffering space is reserved for the sawtooth wave crest 301 after extrusion deformation, the sawtooth wave crests 301 are reduced to give greater resistance when plugging the pipe socket 2.

Referring to fig. 3, a circumferential steel skeleton 4 is arranged inside the built-in sealing ring 3, the circumferential steel skeleton 4 is mainly formed by bending and welding a high-carbon steel bar, and rubber is added for vulcanization, the high-carbon steel has high rigidity and good yield resistance, and the steel skeleton is processed by alkali washing, oil and stain removing and acid washing to form micropores on the metal surface, coating bottom coat and top coat, so that firm adhesion between rubber and metal is ensured to the maximum extent, and the service life of the sealing ring is effectively prolonged.

Under the action of the annular supporting force of the annular steel framework 4, the built-in sealing ring 3 cannot displace or fall off.

One side of the built-in sealing ring 3, which is far away from the sawtooth wave crest 301, is provided with an outer attaching surface 303, and the outer attaching surface 303 is closely attached to the inner wall of the pipe socket 1 so as to achieve the water closing effect.

The pipe socket 1 is provided with the bulge 102 at the joint, and the inner wall of the bulge 102 is attached to the outer wall of the built-in sealing ring 3, so that the built-in sealing ring 3 does not shift after being extruded in the bulge 102 when the pipe socket 2 is installed, and the installation effectiveness is ensured.

The middle section of the pipe socket 1 is provided with a bayonet 101, and the end surface of the pipe socket 2 is abutted against the bayonet 101.

The utility model discloses an installation method:

when the pipe socket is installed, the built-in sealing ring 3 is installed in the bulge 102, the outer wall of the end of the pipe socket 2 is cleaned, lubricating liquid is uniformly smeared on the built-in sealing ring 3, the pipe socket 2 is inserted into the pipe socket 1 until the pipe socket 2 is abutted to the bayonet 101, and the pipe socket 2 cannot be moved.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for convenience of description and simplification of description, but not for indicating or implying that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. The utility model provides a drain pipe junction seal structure, includes tubular product bellmouth (1) and tubular product socket (2), its characterized in that, tubular product bellmouth (1) internally mounted has built-in sealing washer (3), tubular product socket (2) are pegged graft at tubular product bellmouth (1) inner wall, the inner circle of built-in sealing washer (3) and the outside looks butt of tubular product socket (2), the inside of built-in sealing washer (3) is provided with hoop steel skeleton (4).

2. The drain pipe joint sealing structure according to claim 1, wherein a triangular block is fixedly connected to one side of the built-in sealing ring (3), a sawtooth wave crest (301) is arranged on one side of the triangular block, and a wave crest buffering surface (302) is arranged on the other side of the triangular block.

3. A drain pipe joint sealing structure according to claim 1, characterized in that the side of the built-in sealing ring (3) away from the sawtooth crest (301) is provided with an outer abutting surface (303).

4. The drain pipe joint sealing structure according to claim 1, wherein the pipe socket (1) is provided with a protrusion (102) at the joint, and the inner wall of the protrusion (102) is attached to the outer wall of the built-in sealing ring (3).

5. The drain pipe joint sealing structure is characterized in that a bayonet (101) is arranged in the middle section of the pipe socket (1), and the end face of the pipe socket (2) is abutted to the bayonet (101).