CN108825905B

CN108825905B - Corrugated pipe connecting assembly

Info

Publication number: CN108825905B
Application number: CN201810773464.4A
Authority: CN
Inventors: 唐珊珊
Original assignee: Changsha Xingsha Xinao Gas Co Ltd
Current assignee: Changsha Xingsha Xinao Gas Co., Ltd
Priority date: 2018-07-14
Filing date: 2018-07-14
Publication date: 2020-02-14
Anticipated expiration: 2038-07-14
Also published as: CN108825905A

Abstract

The invention discloses a corrugated pipe connecting assembly which comprises a connecting cylinder and an adapter, wherein the connecting cylinder comprises an outer cylinder body, an annular inner cylinder is arranged in the outer cylinder body, the rear end of the inner cylinder is fixedly connected to the inner side wall of the outer cylinder body, a plurality of notches are uniformly formed in the front end of the inner cylinder and form a first annular tooth structure, an installation cavity is formed between the inner cylinder and the outer cylinder body, and one end of a corrugated pipe is inserted into the installation cavity and is abutted by the inner cylinder; the adapter comprises a cap-shaped connector and a cylindrical tensioning head which are connected into a whole, wherein the inner side wall of the cap-shaped connector is provided with an internal thread used for connecting a pipe fitting, and the front end of the cylindrical tensioning head is provided with a notch and forms a second annular tooth structure; and the second annular tooth structure is mutually meshed with the first annular tooth structure. The technical scheme can be convenient to connect the corrugated pipe to the connecting pipe fitting, the front end of the corrugated pipe does not need to be stretched into a light pipe structure after the corrugated pipe is cut, and then the pipeline connection is carried out, so that the corrugated pipe is convenient and reliable, and the sealing performance is good.

Description

Corrugated pipe connecting assembly

Technical Field

The invention relates to the technical field of corrugated pipe connecting devices, in particular to a corrugated pipe connecting assembly.

Background

The corrugated pipe is a bendable pipeline, which is often used for gas transportation, and is generally formed by axially compressing a light pipe through a corrugated pipe manufacturing device, so that an annular folded convex structure is formed on the periphery of the pipe wall, and when the corrugated pipe is used, two ends of the corrugated pipe need to be straightened again to form the light pipe structure, so that the corrugated pipe can be connected with a connecting pipe fitting with the current universality. However, this operation makes the tube wall of the stretched light tube structure brittle due to metal fatigue, and is liable to be corroded after long-term use, and on the other hand, such operation is inconvenient, and it is necessary to cut the preset length of the corrugated tube and then return the corrugated tube to the straightening device to straighten the corrugated tube.

Disclosure of Invention

In view of the above problems in the prior art, there is provided a bellows connection assembly for connecting a bellows to a connection pipe conveniently without additionally stretching the front end of the bellows after the bellows is cut to form a light pipe structure and then connecting the bellows to the connection pipe, so as to overcome the above technical drawbacks.

The specific technical scheme is as follows:

a corrugated pipe connecting assembly comprises a connecting cylinder and an adapter, wherein the connecting cylinder comprises an outer cylinder body, an annular inner cylinder is arranged in the outer cylinder body, the rear end of the inner cylinder is fixedly connected to the inner side wall of the outer cylinder body, a plurality of notches extending along the axial direction are uniformly formed in the front end of the inner cylinder and form a first annular tooth structure, an annular mounting cavity is formed between the outer side wall of the inner cylinder and the inner side wall of the outer cylinder body, and one end of a corrugated pipe is inserted into the mounting cavity from the front end of the connecting cylinder and abuts against the inner side wall of the corrugated pipe from the outer;

the adapter comprises a cap-shaped connector and a cylindrical tensioning head which are connected into a whole from back to front, the inner side wall of the cap-shaped connector is provided with an internal thread for connecting a pipe fitting, the front end of the cylindrical tensioning head is uniformly provided with a plurality of axially extending notches to form a second annular tooth structure, and the front end of the cylindrical tensioning head extends into the rear end of the connecting cylinder and is clamped with the rear end of the connecting cylinder;

and the second annular tooth structure gradually expands in the direction from back to front and is mutually meshed with the first annular tooth structure after extending into the connecting cylinder.

Preferably, the number and the width of the notches formed in the first annular tooth structure and the second annular tooth structure are the same, and the width of each notch is the same as the size of the vertical plate formed between the adjacent notches.

Preferably, an annular groove is formed in the inner side wall of the inner barrel, and an annular protrusion matched with the annular groove is formed in the outer peripheral wall of the cylindrical tensioning head.

Preferably, the outer cylinder and the inner cylinder are integral.

The preferred, the first semicircular groove that one annular was arranged is seted up to the rear end of connecting cylinder, offers the second semicircular groove relative with first semicircular groove position in the preceding terminal surface of cap type connector, and constitutes the circular groove structure that is used for holding O type circle after first semicircular groove and the mutual amalgamation of second semicircular groove.

Preferably, the inner side wall of the outer cylinder body is provided with a thread groove matched with the peripheral corrugated structure of the corrugated pipe.

Preferably, a rubber ring is also embedded on the inner side wall of the outer cylinder body.

Preferably, the first annular tooth structure is also outwardly expanded in a direction from back to front, and the amplitude of expansion of the first annular tooth structure is smaller than the amplitude of expansion of the second annular tooth structure.

The beneficial effects of the above technical scheme are that:

the corrugated pipe connecting assembly comprises a connecting cylinder and an adapter, the connecting cylinder comprises an outer cylinder body, the adapter comprises a cap-shaped connector and a cylindrical tensioning head, a corrugated pipe is inserted into the front end of the connecting cylinder and the corrugated pipe is clamped by the inner side wall and the outer side wall of the installation cavity, the rear end of the cylindrical tensioning head is connected with the connecting pipe fitting in a screwed mode, the corrugated pipe can be conveniently connected to the connecting pipe fitting, the front end of the corrugated pipe is stretched into a light pipe structure after the corrugated pipe is cut, and then the pipeline connection is carried out.

Drawings

FIG. 1 is an exploded view of the bellows coupling assembly of the present invention;

FIG. 2 is an exploded view of the bellows coupling assembly of the present invention from another perspective;

FIG. 3 is a perspective view of a connector barrel of the bellows connector assembly of the present invention;

fig. 4 is a perspective view of another perspective of a connector barrel of the bellows connector assembly of the present invention.

Detailed Description

In order to make the technical means, the creation features, the achievement objects and the effects of the present invention easy to understand, the following embodiments are specifically described with reference to fig. 1 to 4.

Referring to fig. 1 and 2, an exploded view of the bellows connector assembly is shown; referring to fig. 3 and 4, a perspective view of a connector barrel in a bellows connector assembly is shown. And parts of the structure are omitted in the drawings for clarity of showing the structural features of the present embodiment. And defines the direction from the adapter to the connector to the bellows as shown in figure 1 as the back-to-front direction.

As shown in fig. 1 to 4, the corrugated pipe connection assembly provided by the present invention includes a connection cylinder and an adapter, wherein the connection cylinder includes an outer cylinder 1, an annular inner cylinder 2 is provided in the outer cylinder 1, and a rear end of the inner cylinder 2 is fixedly connected to an inner side wall of the outer cylinder 1, a plurality of notches extending along an axial direction are uniformly provided at a front end of the inner cylinder 2 and form a first annular tooth structure, an annular installation cavity is formed between an outer side wall of the inner cylinder 2 and an inner side wall of the outer cylinder 1, and one end of a corrugated pipe 5 is inserted into the installation cavity from a front end of the connection cylinder and abuts against an inner side wall of the corrugated pipe 5 from the outer;

the adapter comprises a cap-shaped connector 3 and a cylindrical tensioning head 4 which are connected into a whole from back to front, wherein the inner side wall of the cap-shaped connector 3 is provided with an internal thread (not shown in the figure) for connecting a pipe fitting, the front end of the cylindrical tensioning head 4 is uniformly provided with a plurality of notches extending along the axial direction and forming a second annular tooth structure, and the front end of the cylindrical tensioning head 4 extends into the rear end of the connecting cylinder and is mutually clamped with the inner cylinder 2;

and, second annular tooth structure is by expanding gradually in the direction of backward forward, by diameter crescent backward forward promptly to stretching into the connecting cylinder after with the mutual interlock of first annular tooth structure, specifically, the notch quantity and the width homogeneous phase that set up on first annular tooth structure, the second annular tooth structure, and the notch width is the same with the riser size that forms between the adjacent notch. The inside wall that can further compress tightly bellows 5 after two ring-shaped tooth structures that set up crisscross each other superpose for the leakproofness is better.

Based on above-mentioned technical scheme, 5 coupling assembling of bellows include connecting cylinder and adapter, the connecting cylinder includes outer barrel 1, the adapter includes cap type connector 3 and cylindric tension head 4, plant into bellows 5 and by the inside and outside lateral wall clamping bellows 5 of installation cavity by the connecting cylinder front end, by the rear end spiro union coupling pipe fitting of cylindric tension head 4, make can be convenient be connected to the connecting pipe spare with bellows 5 on, need not additionally to stretch into the fluorescent tube structure with its front end after bellows 5 cut and carry out the tube coupling again, and is convenient and reliable, and the leakproofness is better.

In a preferred embodiment, an annular groove 6 is formed in the inner side wall of the inner cylinder 2, and an annular protrusion 7 matching with the annular groove 6 is formed on the outer peripheral wall of the cylindrical tension head 4, so that after the cylindrical tension head 4 is inserted into the connecting cylinder, the annular protrusion 7 is clamped into the annular groove 6 to achieve a clamping effect. Further, the outer cylinder 1 and the inner cylinder 2 are integrated. Further, the rear end of connecting cylinder has seted up the first semicircular groove 9 that the annular was arranged together, offers the second semicircular groove 8 relative with first semicircular groove 9 position in the preceding terminal surface of cap type connector 3, and constitutes the circular slot structure that is used for holding O type circle after first semicircular groove 9 and the mutual amalgamation of second semicircular groove 8 to further realize the leakproofness. Furthermore, a thread groove (not shown in the figure) matched with the peripheral corrugated structure of the corrugated pipe 5 is formed in the inner side wall of the outer cylinder 1, so that the connecting cylinder can be connected with the corrugated pipe 5 in a screwing mode, and the connecting cylinder is stable in connection and not easy to separate. Furthermore, a rubber ring (not shown) is also embedded on the inner side wall of the outer cylinder 1 to further achieve the sealing effect. Further, in the direction from back to front, the first annular tooth structure is also outwardly expanded, i.e., gradually increased in diameter, but with an expansion magnitude smaller than that of the second annular tooth structure.

During the concrete use, directly insert into the installation cavity through the screw with bellows 5, insert cylindric tensioning head 4 by the connecting cylinder rear end again, until annular protrusion 7 inlays the dress and goes into the mutual chucking of ring channel 6, can suitably rotate cap type connector 3 and make mutual chucking between two annular tooth structures, riser card between adjacent notch is put into the notch promptly, nevertheless can not rotate yet, the inside wall that leans on bellows 5 is supported to the first annular tooth structure outer fringe of inner tube 2, make to compress tightly bellows 5 in the installation cavity, and the rear end of cap type connector 3 closes the connecting tube spare soon, can realize bellows 5's connection. In addition, the cylindrical tensioning head 4 and the cap type connector 3 are both provided with a passage for passing gas along the axis.

In addition, as a different embodiment, the basic contents are the same as those described above, except that, in this embodiment, the inner cylinder 2 is made of plastic or rubber material, the outer cylinder 1 is made of metal material, the cylindrical tensioning head 4 can be made of plastic or rubber or metal material, the inner cylinder 2 and the outer cylinder 1 are not integrated, and can be realized by clamping, screwing or other modes such as direct embedding during production, so that the inner cylinder has elasticity and better sealing property, in the embodiment, the front end of the inner cylinder 2 is not provided with the first annular tooth structure, the front end of the cylindrical tensioning head 4 is not provided with the second annular tooth structure, the corrugated pipe 5 is pressed in the direction of the outer cylinder 1 after the two are completely abutted against each other, and the plastic material has the characteristics of elasticity and sealing, so that the convenient and reliable interconnection and sealing effects can be realized.

The foregoing is merely a preferred embodiment of the invention, which is intended to be illustrative and not limiting. It will be understood by those skilled in the art that various changes, modifications and equivalents may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A corrugated pipe connecting component is characterized by comprising a connecting cylinder and an adapter, wherein,

the connecting cylinder comprises an outer cylinder body (1), an annular inner cylinder (2) is arranged in the outer cylinder body (1), the rear end of the inner cylinder (2) is fixedly connected to the inner side wall of the outer cylinder body (1), a plurality of notches extending along the axial direction are uniformly formed in the front end of the inner cylinder (2) to form a first annular tooth structure, an annular mounting cavity is formed between the outer side wall of the inner cylinder (2) and the inner side wall of the outer cylinder body (1), one end of a corrugated pipe (5) is inserted into the mounting cavity from the front end of the connecting cylinder, and the outer side wall of the front end of the inner cylinder (2) abuts against the inner side wall of the corrugated pipe (5);

the adapter comprises a cap-shaped connector (3) and a cylindrical tensioning head (4) which are connected into a whole from back to front, wherein the inner side wall of the cap-shaped connector (3) is provided with an internal thread used for connecting a pipe fitting, the front end of the cylindrical tensioning head (4) is uniformly provided with a plurality of axially extending notches to form a second annular tooth structure, and the front end of the cylindrical tensioning head (4) is inserted from the rear end of the connecting cylinder and is mutually clamped with the inner cylinder (2);

2. The bellows coupling assembly of claim 1, wherein the first and second annular tooth structures define slots having the same number and width, and wherein the slots have a width that is the same as a dimension of a riser defined between adjacent slots.

3. A bellows connection assembly according to claim 2, wherein an annular groove (6) is provided on the inner side wall of the inner cylinder (2), and an annular projection (7) matching the annular groove (6) is provided on the outer peripheral wall of the cylindrical tension head (4).

4. A bellows connection assembly according to claim 3, wherein the outer cylinder (1) and the inner cylinder (2) are integral.

5. A corrugated pipe connecting assembly according to claim 4, wherein the rear end of the connecting cylinder is provided with a first semicircular groove (9) which is annularly arranged, the front end surface of the cap-shaped connector (3) is provided with a second semicircular groove (8) which is opposite to the first semicircular groove (9), and the first semicircular groove (9) and the second semicircular groove (8) are spliced with each other to form a circular groove structure for accommodating an O-shaped ring.

6. A bellows connection assembly according to claim 5, wherein the inner side wall of the outer cylinder (1) is provided with a thread groove matching with the peripheral corrugation of the bellows (5).

7. A bellows connection assembly according to claim 6, wherein a rubber ring is also embedded in the inner side wall of the outer cylinder (1).

8. The bellows connection assembly of claim 7, wherein the first annular tooth structure is also flared in a rearward-to-forward direction, and wherein the first annular tooth structure flares less than the second annular tooth structure.