CN2937744Y

CN2937744Y - Connection pipeline

Info

Publication number: CN2937744Y
Application number: CN 200620058996
Authority: CN
Inventors: 刘国坚
Original assignee: Guangdong Liansu Technology Industrial Co Ltd
Current assignee: Guangdong Liansu Technology Industrial Co Ltd
Priority date: 2006-05-16
Filing date: 2006-05-16
Publication date: 2007-08-22
Anticipated expiration: 2016-05-16

Abstract

The utility model provides a connection pipe whose joint comprises a convex expending mouth and a pipe end inserted in the convex expending mouth. A seal ring is provided between the convex expending mouth and the inserted pipe end. The seal ring is a Y shaped seal ring which includes an inner lip, an outer lip and a base part. The inner lip and outer lip extend from the base part respectively and each has an angle with the base part; the angle between the outer lip and the base part is bigger than that between the inner lip and the base part. The connection pipe is sealed by the enclosing force and tension force between the inner lip, outer lip and the inserted pipe, the convex expending pipe.

Description

A kind of connecting tube

Technical field

The utility model belongs to the pipe fittings field, particularly relates to a kind of anti-seal ring that leaks when being used for pipeline and connecting.

Technical background

The interconnection technique of pipeline mainly contains following several at present:

Metal solder is applicable to that the metal material pipeline connects;

The electric heating fusion welding is applicable to the connection of PE feedwater piping;

The connection of Electric thermal smelting belt, shrink belt is applicable to the connection of PE class drainage pipe;

These several Placements all need some special equipment when construction, and some need use electro-heat installation, are not suitable for field construction, and when construction is to the environment requirement harshness of construction, the environment that needs dry cleansing, these all bring very big difficulty to construction.

Comparatively advanced is the connection of enlarging socket joint mode at present, the sealing means employing glue special that connects is bonding or adopt the seal ring resiliently deformable to seal, this mode is constructed does not need special equipment, and the requirement to construction environment is not high yet, so be widely adopted, but owing to connect the two ends of back pipeline radial contraction takes place easily, make sealability not strong, often occur the situation of leaking in use for some time.At present in the research and development of convenience that is conceived to insert for enlarging socket joint mode Study on Technology and socket joint equipment more, seldom be conceived to cause the problem of leaking owing to pipeline shrinks, even the research of relevant sealed against leakage aspect, also mostly on improvement socket joint equipment, even overcome seepy question, also high because of the complexity of equipment and cost makes practicability not strong.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, proposes a kind of connecting tube of realizing the long term seal performance by the improvement seal ring.

In order to realize the foregoing invention purpose, the technological scheme of employing is:

A kind of connecting tube, its joint comprises that pipeline expands tang and the insertion pipe end that is inserted in the pipeline expansion tang, also be provided with seal ring between described pipeline expansion tang and the insertion pipe end, described seal ring is " Y " shape seal ring, it comprises epipharynx, outer lip and root, epipharynx and outer lip separately extend from root one end, all are certain included angle with root, and the angle between outer lip and the root expands the interior angle of tang greater than pipeline.

In the technique scheme, the outer side surface of described outer lip is circular-arc, is cylindrical because pipeline expands the inwall of tang, so adopt the circular-arc location of expanding tang with pipeline that makes things convenient for.

All there is the part hollow out both sides of seal ring root of the present utility model.The conscious rubber material level of snatching a moment when described hollow out is design " Y " shape rubber seal makes rubber seal that the feed supplement space be arranged in compression process, and is therefore relatively easy in installation process.

Described seal ring adopts elastic plastic material.

So far, the utility model adopts the flexible enlarging seal ring of " Y " shape to contact with insertion tube pipeline outer wall, expansion tang inner-walls of duct respectively by epipharynx and outer lip.Because the angle between outer lip and the root is greater than the interior angle that expands the tang pipeline, so when connecting by enlarging socket joint mode, outer lip is forced to tighten up, it has outside tension force and expands the tang inner-walls of duct firmly to be adjacent to, simultaneously, because the elasticity of seal ring, tightening up of outer lip makes epipharynx produce and the opposite package power of the outside tension force of outer lip, to pack tightly the outer wall that inserts pipeline, realized drip-preventing function by double seal.

And, when adopting the utility model, just begun to have fluid to pass through and pressure is very little, seal by the epipharynx of seal ring and outer lip and package power and tension force between insertion tube pipeline outer wall, the expansion tang inner-walls of duct; When producing big pressure along with the cumulative of fluid, elastic expansion takes place in the heel of seal ring under hydrodynamic pressure, thereby epipharynx and outer lip and insertion tube pipeline outer wall, the package power and the tension force that expand between the tang inner-walls of duct increase feasible sealing better, and the effect of the big more sealing of the pressure of fluid is good more, has guaranteed the usefulness of long term seal.

Description of drawings

Fig. 1 is a ring structure schematic representation of the present utility model;

Fig. 2 is for expanding the schematic representation of angle α in the tang tubing;

Fig. 3 is the angle β schematic representation of outer lip and root;

Fig. 4 is a structural representation of the present utility model.

Embodiment

Below in conjunction with accompanying drawing the utility model is described further.

Structural representation of the present utility model inserts pipeline 1 and is inserted into the expansion tang end that expands tang pipeline 2 as shown in Figure 4, inserts pipeline 1 and expand between the tang pipeline 2 to be placed with seal ring 3.

The structural representation of seal ring 3 described in the utility model as shown in Figure 1, comprise root 33, epipharynx 31, outer lip 32, described epipharynx 31, outer lip 32 extend respectively outward at an end of root, and it is one circular-arc that the outer side surface of outer lip 32 becomes, and all there is openwork part 34 both sides of root 33.

The outer lip 32 of seal ring 3 and the angle β between the root 33 are greater than the interior angle α that expands tang pipeline 2, and its structure is shown in accompanying drawing 2, accompanying drawing 3.

The utility model is owing to adopt the flexible enlarging seal ring 3 of " Y " shape, and it contacts with insertion pipeline 1 outer wall, expansion tang pipeline 2 inwalls respectively by epipharynx 31 and outer lip 32.Because the angle β of outer lip 32 between root 33 is greater than expanding the interior angle α that tang pipeline 2 expands the tang end, so when connecting by enlarging socket joint mode, outer lip 32 is forced to tighten up, it has outside tension force and expands tang pipeline 2 inwalls firmly to be adjacent to, simultaneously, because the elasticity of seal ring, tightening up of outer lip 32 makes epipharynx 31 produce and the opposite package power of outer lip 32 outside tension force, to pack tightly the outer wall that inserts pipeline 1, realized drip-preventing function by double seal, and the utility model is at the conscious rubber material level of snatching a moment of the root of " Y " shape seal ring, form hollow out position 34, make rubber seal that the feed supplement space be arranged in compression process, therefore relatively easy in installation process.。

And, insert pipeline 1 and expand tang pipeline 2 is connected after, just begun to have fluid to pass through and pressure is very little, seal by package power and tension force between the epipharynx 31 of seal ring 3 and outer lip V and insertion pipeline 1 outer wall, expansion tang pipeline 2 inwalls; When producing big pressure along with the cumulative of fluid, elastic expansion takes place in the heel 33 of seal ring 3 under hydrodynamic pressure, thereby epipharynx 31 and outer lip 32 and the package power and the tension force increase of inserting between pipeline 1 outer wall, expansion tang pipeline 2 inwalls make sealing better, and the effect of the big more sealing of the pressure of fluid is good more, has guaranteed the usefulness of long term seal.

The utility model is simple in structure, and the contrast prior art, and main improvements are sealing ring, institute With cheap, and practical and convenient, can realize the connection of two ends pipeline, also can realize a plurality of pipelines Connect, when the place of most convenient just was that multi-pipeline connects, an end of every segment pipe all adopted and expands the tang shape, The other end is then as inserting paragraph, and the inserting paragraph of a segment pipe is inserted into the expansion tang end of another segment pipe, and Between place sealing ring and then can.

Claims

1, a kind of connecting tube, its joint comprises that pipeline expands tang (2) and is inserted in insertion pipe end (1) in the pipeline expansion tang (2), also be provided with seal ring (3) between described pipeline expansion tang (2) and the insertion pipe end (1), it is characterized in that described seal ring (3) is " Y " shape seal ring, it comprises epipharynx (31), outer lip (32) and root (33), and the angle (β) between outer lip (32) and the root (33) expands the interior angle (α) of tang (2) greater than pipeline.

2, connecting tube according to claim 1 is characterized in that the outer side surface of the outer lip (32) of described " Y " shape seal ring is circular-arc.

3, connecting tube according to claim 1 and 2 is characterized in that the both sides of the root (33) of described " Y " shape seal ring are equipped with the part hollow out.