CN210266363U

CN210266363U - Plastic pipeline joint

Info

Publication number: CN210266363U
Application number: CN201921227968.2U
Authority: CN
Inventors: 柯丽霞; 刘厚勇
Original assignee: Individual
Current assignee: Sichuan Hengli Science and Technology Co.,Ltd.
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-04-07
Anticipated expiration: 2029-07-31

Abstract

The utility model discloses a plastic pipeline joint, belonging to the technical field of plastic pipeline connection, comprising a lining pipe, a fastener and a pipe hoop, wherein the pipe wall of the lining pipe is provided with a first circular clamping groove along the axial direction and the circle center of the first circular clamping groove is arranged on the central shaft of the lining pipe; the pipe hoop is sleeved outside the lining pipe, a second clamping groove is formed in the inner side wall of the pipe hoop, the first clamping groove is communicated with the second clamping groove, and the clamping piece is arranged in the second clamping groove; the second clamping groove extends to the pipe hoop connecting end port along the axial direction of the pipe hoop; the plastic pipeline is sealed by using the self material, so that the hidden danger of rubber aging and sealing failure is avoided; the installation is easy, and it is laborsaving effectively to avoid sliding of big friction surface during the installation, and specialized tool small in size can be suitable for the connection of the plastic conduit of multiple external diameter specification.

Description

Plastic pipeline joint

Technical Field

The utility model belongs to the technical field of plastic conduit's connection, concretely relates to plastic conduit connects.

Background

The plastic pipelines are largely used in a building heating ventilation water supply and drainage system, the materials used in the sealing surface are divided into soft sealing filled with rubber or elastic colloid and hard sealing sealed by using the material of the pipe, the soft sealing is commonly used in a pipe hoop type, a clamping and pressing type, a quick insertion type and the like, the soft sealing can not realize the hidden burying with the same service life as the building due to the inevitable aging defect of the sealing material, and the application range is limited; the hard sealing plastic pipe uses a sliding and tightening structure, as shown in fig. 1, the hard sealing sliding and tightening structure is that the pipe wall of the plastic pipe 200 is clamped in a gap 100 between an inner pipe 400 and an outer pipe hoop 300, and the plastic pipe 200 is extruded to form a sealing surface by using the pipe deformation by using the interference fit between the gap 100 between the inner pipe 400 and the outer pipe hoop 300 and the pipe wall of the plastic pipe 200.

When the pipe expanding device is used for installing, a pipe expanding machine is used for expanding the pipe so as to be capable of sleeving the inner pipe, and a sliding and tightening tool is used for dragging the outer pipe hoop 300 from the outer end of the inner pipe 400 to drive the expanded plastic pipe 200 to slide into the gap 100 between the inner pipe 400 and the outer pipe hoop 300 along the axial direction to form interference fit so as to finish hard sealing.

Because the installation process needs to use different special machines twice, the tool input is high, the plastic pipeline 200 is required to be extruded when the outer pipe hoop 300 is dragged, great dragging force is required, the size of the machine adopting a hydraulic or lever mode is large, and the use space is limited.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the utility model provides a plastic pipeline joint.

The utility model discloses the technical scheme who adopts does: a plastic pipeline joint comprises an inner lining pipe, a clamping piece and a pipe hoop, wherein a first circular clamping groove is formed in the pipe wall of the inner lining pipe along the axial direction of the inner lining pipe, and the circle center of the first circular clamping groove is arranged on the central shaft of the inner lining pipe; the pipe hoop is sleeved outside the lining pipe, a second clamping groove is formed in the inner side wall of the pipe hoop, the first clamping groove is communicated with the second clamping groove, and the clamping piece is arranged in the second clamping groove; the second clamping groove extends to the pipe clamp connecting end port along the axial direction of the pipe clamp.

Further limit, the lateral wall of the pipe hoop is provided with a first groove.

Further limiting, a matching opening is formed in the outer side wall of the opening end of the lining pipe, the matching opening extends to the opening of the lining pipe along the axial direction of the lining pipe, and the distance between the second clamping groove and the connecting end of the pipe hoop is smaller than the width of the matching opening.

Further limiting, a second groove is formed in the wall of the lining pipe and communicated with the first clamping groove, and the second groove and the second clamping groove are in the same vertical line.

Further, the clamping piece is a clamping ring, the second clamping groove is of a circular structure, the circle center of the second clamping groove is arranged on the central shaft of the lining pipe, and the second groove is of a circular structure.

Further limiting, one side of the first clamping groove, which is far away from the opening end of the lining pipe, is a spigot end face.

Further limit, a third groove is arranged on the outer side wall of the lining pipe, and the third groove is arranged on one side of the matching opening.

The utility model has the advantages that: 1. firstly, sleeving the pipe hoop and the clamping piece outside the plastic pipeline, then inserting the pipe wall of the plastic pipeline into the first clamping groove, and finally pushing the pipe hoop to move towards the inner liner pipe under the action of external force and sleeving the pipe hoop and the clamping piece on the outer surface of the inner liner pipe; the clamping piece is extruded in the process that the pipe hoop is contacted with the lining pipe and moves, and the clamping piece extrudes the plastic pipeline to enable the plastic pipeline to deform, so that no gap exists between the pipe wall of the plastic pipeline and the first clamping groove to achieve the sealing effect; the inner lining pipe and the inner wall of the plastic pipeline are in clearance fit, pipe expansion is not needed, and the use of pipe expansion tools is reduced. The plastic pipeline is sealed by using the self material, so that the hidden danger of rubber aging and sealing failure is avoided; the installation is easy, and it is laborsaving effectively to avoid sliding of big friction surface during the installation, and specialized tool small in size can be suitable for the connection of the plastic conduit of multiple external diameter specification.

2. The first groove is arranged, so that the pipe hoop can be conveniently taken down from the lining pipe, and the plastic pipe joint can be repeatedly used.

3. The outer side wall of the pipe hoop is arranged in the matching opening, so that the connection between the pipe hoop and the lining pipe is realized, and the influence on installation due to the overlarge outer diameter of the plastic pipeline joint is avoided; the distance between the second clamping groove and the connecting end of the pipe hoop is smaller than the width of the matching opening, so that an opening and closing opening is formed between the pipe hoop and the wall of the lining pipe, the pipe hoop and the lining pipe can be conveniently separated, and the plastic pipe joint can be repeatedly used.

4. The second groove is favorable for guiding the plastic pipeline to directionally deform, the forming is regular, the repeated use is facilitated, and the plastic pipeline is in close contact with the second groove after being deformed, so that the sealing effect is achieved.

5. The snap ring can be completely deformed with the same cross section of the plastic pipeline and clamped into the second groove, so that omnibearing sealing is achieved.

6. The spigot end face serves to limit displacement of the plastic pipe.

7. The third groove is arranged, so that the pipe hoop and the lining pipe can be conveniently separated, and the plastic pipe joint can be repeatedly used.

Drawings

FIG. 1 is a schematic diagram of a hard seal slip-on plastic pipe joint;

fig. 2 is a schematic structural diagram of the present invention;

FIG. 3 is a cross-sectional view of section A-A of FIG. 2;

fig. 4 is an exploded view of the present invention;

fig. 5 is a longitudinal sectional view of the present invention, assembled;

FIG. 6 is a partial enlarged view of area B in FIG. 5;

in the figure: 1-pipe hoop; 2-a fastener; 3-a first card slot; 4-lining tube; 5-a second groove; 6-fitting the mouth; 7-a third groove; 8-a second card slot; 9-a first groove; 10-a first sealing surface; 11-a second sealing surface; 12-a third sealing surface; 13-a fourth sealing surface; 100-voids; 200-plastic pipes; 300-an outer pipe clamp; 400-inner tube.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any 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 specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, some structures or devices are not specifically described, and it is understood that there are structures or devices that can be implemented in the prior art.

The specific embodiments may be combined in any manner, except to the exclusion of each other.

Example 1

As shown in fig. 2-6, the technical solution of the present invention is: a plastic pipeline joint comprises an inner lining pipe 4, a clamping ring and a pipe hoop 1, wherein a circular first clamping groove 3 is formed in the pipe wall of the inner lining pipe 4 along the axial direction of the pipe wall, and the circle center of the first clamping groove 3 is arranged on the central shaft of the inner lining pipe 4; the pipe hoop 1 is sleeved outside the lining pipe 4, and the inner side wall of the pipe hoop 1 is contacted with the outer side wall of the lining pipe 4; a second clamping groove 8 is formed in the inner side wall of the pipe hoop 1, the first clamping groove 3 is communicated with the second clamping groove 8, the clamping ring is arranged in the second clamping groove 8, and the circle center of the clamping ring is arranged on the central shaft of the lining pipe 4; the second clamping groove 8 extends to the connection end port of the pipe clamp 1 along the axial direction of the pipe clamp 1.

In this embodiment, the outer side wall of the pipe clamp 1 is provided with a first groove 9, and the first groove 9 is close to the connection end port of the pipe clamp 1, so that the pipe clamp 1 can be conveniently taken down from the lining pipe 4, and the plastic pipeline 200 joint can be reused.

In this embodiment, a matching opening 6 is formed in the outer side wall of the open end of the inner lining tube 4, the matching opening 6 extends to the opening of the inner lining tube 4 along the axial direction of the inner lining tube 4, the distance between the second clamping groove 8 and the connecting end of the tube hoop 1 is smaller than the width of the matching opening 6, the tube wall of the tube hoop 1 is matched with the matching opening 6, pressure is conveniently applied to compress the tube wall, a gap is reserved between the tube hoop 1 and the inner lining tube 4 after assembly is completed, and an insertion tool is used for reversely poking the tube hoop 1 to separate the inner lining tube 4 from the tube hoop 1.

In this embodiment, the pipe wall of the lining pipe 4 is provided with a second groove 5, the second groove 5 is communicated with the first clamping groove 3, the second groove 5 and the second clamping groove 8 are in the same vertical straight line, so that the plastic pipe 200 can be guided to deform in a directional manner, the forming is regular, the repeated use is facilitated, and the plastic pipe 200 is deformed and then is in close contact with the second groove 5, so that the sealing effect is achieved.

In this embodiment, the second slot 8 is a circular structure, the center of the circle is disposed on the central axis of the inner lining tube 4, the second groove 5 is a circular structure, and the pipe clamp 1 is displaced relative to the center axis to apply radial pressure to the snap ring, so as to compress the plastic pipe 200 to reduce the diameter, thereby effectively sealing the inner wall of the plastic pipe 200 and the second groove 5 on the inner lining tube 4 to form two linear sealing surfaces, and achieving omnidirectional sealing.

In this embodiment, the side of the first locking groove 3 away from the open end of the lining tube 4 is a spigot end surface, which limits the displacement of the plastic pipe 200 and forms a third sealing surface 12 and a fourth sealing surface 13.

In this embodiment, the outer sidewall of the inner lining pipe 4 is provided with a third groove 7, and the third groove 7 is disposed on one side of the fitting opening 6, so as to facilitate separation of the pipe clamp 1 from the inner lining pipe 4, and thus, reuse of the joint of the plastic pipe 200 is achieved.

The working principle of the embodiment is as follows: firstly, sleeving the pipe hoop 1 and the snap ring outside the plastic pipeline 200, then inserting the pipe wall of the plastic pipeline 200 into the first clamping groove 3, and finally pushing the pipe hoop 1 to move towards the inner liner pipe 4 and contact with the matching opening 6 of the inner liner pipe 4 under the action of external force to realize the connection of the pipe hoop 1 and the inner liner pipe 4; the clamping ring is extruded in the process that the pipe hoop 1 is contacted with the inner lining pipe 4 and moves, the clamping ring extrudes the plastic pipeline 200 to reduce the diameter of the plastic pipeline 200, so that two linear sealing surfaces are formed for effective sealing by the inner wall of the pipeline and the second groove 5 on the inner lining pipe 4, and a first sealing surface 10 and a second sealing surface 11 are formed; the inner lining pipe 4 is in clearance fit with the inner wall of the plastic pipeline 200, pipe expansion is not needed, and the use of pipe expansion tools is reduced.

The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.

Claims

1. A plastic pipeline joint is characterized by comprising an inner lining pipe (4), a clamping piece (2) and a pipe hoop (1), wherein a first circular clamping groove (3) is formed in the pipe wall of the inner lining pipe (4) along the axial direction of the inner lining pipe, and the circle center of the first circular clamping groove is arranged on the central shaft of the inner lining pipe (4); the pipe hoop (1) is sleeved outside the lining pipe (4), a second clamping groove (8) is formed in the inner side wall of the pipe hoop (1), the first clamping groove (3) is communicated with the second clamping groove (8), and the clamping piece (2) is arranged in the second clamping groove (8); the second clamping groove (8) extends to the connecting end port of the pipe hoop (1) along the axial direction of the pipe hoop (1).

2. The plastic pipe joint as claimed in claim 1, wherein the outer sidewall of the pipe clamp (1) is provided with a first groove (9).

3. The plastic pipe joint as claimed in claim 1 or 2, wherein a fitting opening (6) is formed in an outer side wall of the open end of the inner lining pipe (4), the fitting opening (6) extends to the opening of the inner lining pipe (4) along an axial direction of the inner lining pipe (4), and a distance between the second clamping groove (8) and the connecting end of the pipe hoop (1) is smaller than a width of the fitting opening (6).

4. The plastic pipe joint as recited in claim 3, wherein the wall of the lining pipe (4) is provided with a second groove (5), the second groove (5) is communicated with the first slot (3), and the second groove (5) and the second slot (8) are on the same vertical line.

5. The plastic pipe joint as recited in claim 4, wherein the clip (2) is a snap ring, the second groove (8) is of a circular structure, the center of the second groove is arranged on the central axis of the lining pipe (4), and the second groove (5) is of a circular structure.

6. The plastic pipe joint as recited in claim 5, wherein the side of the first locking groove (3) away from the open end of the lining pipe (4) is a spigot end face.

7. The plastic pipe joint as recited in claim 3, wherein a third groove (7) is formed on the outer side wall of the lining pipe (4), and the third groove (7) is disposed on one side of the fitting opening (6).