CN219013621U

CN219013621U - Leakage-proof device for pipeline joint

Info

Publication number: CN219013621U
Application number: CN202320829772.0U
Authority: CN
Inventors: 纪陶
Original assignee: Harbin Water Supply Group Co ltd
Current assignee: Harbin Water Supply Group Co ltd
Priority date: 2023-04-14
Filing date: 2023-04-14
Publication date: 2023-05-12
Anticipated expiration: 2033-04-14

Abstract

A leakage-proof device for a pipeline joint relates to a leakage-proof joint, and belongs to the technical field of pipeline connecting fittings. The sleeve inner wall central point puts and sets up annular bulge, adjust the rubber circle stopper dress in the sleeve and support in annular bulge both sides, adjust the rubber circle and make by outer rubber circle and interior rubber circle and deformation connecting portion are integrative, connect the inboard end cartridge of pipe fitting inside the rubber circle, connect pipe fitting outer wall intermediate position setting annular limiting plate, sleeve inner wall both sides set up annular draw-in groove, connect the pipe fitting and establish in annular draw-in groove and can radially squint through annular limiting plate card, connect pipe fitting outside end cartridge pipeline and locking are fixed, connect the pipe fitting inner wall setting annular support position, the spring setting is in annular support position outside, the holding ring passes through spring support pressure equipment at the pipeline terminal surface. Can connect two pipelines that can't coaxial to connect the pipe fitting inside and combine the supporting ring to seal the pipeline tip through the spring, reduce wearing and tearing, increase of service life.

Description

Leakage-proof device for pipeline joint

Technical Field

The utility model relates to a leakage-proof joint, in particular to a leakage-proof device for a pipeline joint, and belongs to the technical field of pipeline connecting fittings.

Background

The pipeline joint is a common accessory for connecting pipelines, the basic requirement is the leakage-proof performance of a connecting point, the leakage-proof structure of the conventional pipeline joint is generally in a form of screw tightening and is combined with a sealing ring on a connecting surface, the leakage-proof effect is realized by compacting the sealing ring, but the sealing ring can be extruded and worn in a screwing form in the screw tightening process, the sealing ring is easy to damage and lose efficacy after long-time use, and the service life is not long.

The Chinese patent utility model of a leakage-proof cutting sleeve type copper pipe joint is characterized in that a clamping sleeve is clamped between a joint body and a nut, a crumple ring and a supporting ring are respectively arranged at two ends of the clamping sleeve, and a plurality of groups of sealing rings are arranged in the middle of the clamping sleeve. Compared with the traditional leakage-proof structure, the sealing effect is improved, but the compression mode is the threaded fit of the connector body and the nut, and the compression abrasion of the clamping sleeve screwing mode is still easy to cause in the screwing process.

The Chinese patent utility model with the name of leak-proof pipe joint comprises a pipe joint body provided with a hollow cavity, a joint sleeved at the end part of the hollow cavity of the pipe joint body, a sleeve removing pipe with one end clamped at the end part of the joint and the other end sleeved at the inner cavity of the joint and capable of moving relative to the inner cavity of the joint, and a metal locking ring, a pressing ring and a special-shaped sealing ring with two ends of which the outer diameters are larger than the middle outer diameter, wherein the metal locking ring, the pressing ring and the special-shaped sealing ring are sequentially clamped between the inner end part of the joint and the pipe joint body. The novel anti-leakage special-shaped sealing ring has the advantages that the traditional thread fastening mode is abandoned, the abrasion deformation of the special-shaped sealing ring can be reduced while leakage prevention is realized, the novel anti-leakage special-shaped sealing ring cannot adapt to connection of two pipelines which cannot be coaxial, the use condition is limited, and the applicability is not strong.

Therefore, there is a need for a pipe joint leakage protection device that facilitates the connection of two pipes that cannot be coaxial and that overcomes the compressive wear of the seal in the form of a twist and rotation and that increases the service life.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model provides the leakage-proof device for the pipeline joint, which can connect two pipelines which cannot be coaxial through ingenious matching of the adjusting rubber ring, the connecting pipe fitting and the sleeve, and the inside of the connecting pipe fitting is combined with the end part of the pipeline through a spring to seal the end part of the pipeline, so that the abrasion is reduced, and the service life is prolonged.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a pipeline joint leak protection device, includes sleeve, two regulation rubber rings, two connecting tube spare, two springs and two supporting rings, sleeve inner wall central point puts an organic whole and sets up annular bulge, two tight stopper dress of regulation rubber rings in the sleeve and support in annular bulge both sides, the regulation rubber rings by outer rubber ring and interior rubber ring and connect deformation connecting portion between the two an organic wholely make, two connecting tube spare inboard ends closely cartridge respectively in corresponding inside the rubber ring, connecting tube spare outer wall intermediate position an organic whole sets up annular limiting plate, sleeve inner wall both sides set up two annular draw-in grooves, connecting tube spare passes through annular limiting plate card is established in corresponding annular draw-in groove and can radially deviate, two connecting tube spare outside ends are used for the cartridge of pipeline to be connected and can lock fixedly, connecting tube spare inner wall is adjacent inside the inside end position an organic whole set up annular supporting position, two supporting rings set up respectively in corresponding annular supporting position and supporting ring between the terminal surface, the supporting ring outer terminal surface sets up the sealing pad of sealing spring through the outer terminal surface that can closely correspond.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, through ingenious matching of the adjusting rubber ring, the connecting pipe fitting and the sleeve, the rubber ring is integrally made of the outer rubber ring, the inner rubber ring and the inner rubber ring as well as the deformation connecting part, the inner end of the connecting pipe fitting is inserted into the inner rubber ring, the outer end of the connecting pipe fitting is connected with the pipeline and can be locked and fixed, the deformation connecting part can deform to adapt to eccentric adjustment of the inner rubber ring and the outer rubber ring, so that two pipelines which cannot be coaxial can be connected, a traditional thread fastening sealing mode is abandoned, the end part of the pipeline is sealed by combining the supporting ring with the inside of the connecting pipe fitting through the spring, the sealing gasket on the supporting ring is tightly pressed with the end part of the pipeline through the spring without being twisted, the abrasion of the sealing gasket is reduced, the leakage-proof performance is excellent, and the service life is prolonged.

Drawings

FIG. 1 is a schematic view of the structure of the present utility model in a state where two pipes are connected in a facing manner;

FIG. 2 is a schematic view of the structure of the present utility model in an eccentric connection state of two pipes;

fig. 3 is an isometric view of a split structure of the adjusting rubber ring and the connecting pipe fitting of the present utility model.

In the figure: 1 sleeve, 101 annular bulge, 102 annular clamping groove, 2 adjusting rubber ring, 201 outer rubber ring, 202 inner rubber ring, 203 deformation connecting part, 3 connecting pipe fitting, 301 annular limiting plate, 302 annular supporting position, 303 opening, 4 spring, 5 supporting ring, 501 sealing gasket, 6 locking nut and 7 pipeline.

Description of the embodiments

The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present utility model are all within the protection scope of the present utility model.

As shown in fig. 1-3, the leakage-proof device for the pipeline joint comprises a sleeve 1, two adjusting rubber rings 2, two connecting pipe fittings 3, two springs 4 and two supporting rings 5.

Referring to fig. 1, an annular protrusion 101 is integrally disposed at the center of the inner wall of the sleeve 1, two adjusting rubber rings 2 are tightly plugged in the sleeve 1 and abut against two sides of the annular protrusion 101, and the adjusting rubber rings 2 are integrally formed by an outer rubber ring 201, an inner rubber ring 202 and a deformation connection portion 203 connected between the outer rubber ring and the inner rubber ring, as shown in fig. 3. Further, it is preferable to adjust the inner diameter of the rubber ring 2 to be equal to the caliber of the annular protrusion 101, so that not only the center holes of the rubber ring 2 and the annular protrusion 101 can be aligned in a natural state, but also the corresponding two pipes 7 are opposite to each other in a connection state, so that liquid is prevented from impacting between the outer rubber ring 201 and the inner rubber ring 202, and on the other hand, a sufficient deformation space is ensured for the deformation connection part 203 when the inner rubber ring 202 is deviated.

The deformation connection portion 203 of the adjusting rubber ring 2 is of a ring-shaped structure with a curved or fold-line-shaped cross section, and the inner rubber ring 202 can be allowed to deviate in the radial direction through the deformation capability of the adjusting rubber ring under the condition that the position of the outer rubber ring 201 is fixed. Further, the deformation connection part 203 of the adjusting rubber ring 2 preferably adopts two ring structures with arc-shaped cross sections, the opening sides of the two ring structures are oppositely arranged and connected to the two sides between the outer rubber ring 201 and the inner rubber ring 202, and the structure is relatively stable.

In order to enhance the connection stability of the adjusting rubber ring 2 and the sleeve 1, at least one circular groove can be formed in the outer wall of the outer rubber ring 201 of the adjusting rubber ring 2, a clamping ring is arranged on the inner wall of the sleeve 1 in a protruding mode at the corresponding position, the adjusting rubber ring 2 is tightly clamped and connected with the clamping ring through the circular groove, and relative sliding of the adjusting rubber ring 2 and the sleeve 1 is avoided while sealing performance is improved.

The inner ends of the two connecting pipes 3 are respectively and tightly inserted into the corresponding inner rubber rings 202, and the inner ends of the connecting pipes 3 and the inner rubber rings 202 can be glued and fixed. The annular limiting plate 301 is integrally arranged in the middle of the outer wall of the connecting pipe fitting 3, the connecting pipe fitting 3 is limited to be incapable of moving axially, two annular clamping grooves 102 are formed in two sides of the inner wall of the sleeve 1, and the connecting pipe fitting 3 is clamped in the corresponding annular clamping grooves 102 through the annular limiting plate 301 and can deviate in the radial direction.

In the process of driving the inner rubber ring 202 to radially deviate by the connecting pipe fitting 3, the corresponding two pipelines 7 are eccentrically connected, and in order to avoid the influence on tightness due to overlarge deformation of the outer rubber ring 201 and the inner rubber ring 202 of the adjusting rubber ring 2, reinforcing steel rings can be respectively arranged inside the outer rubber ring 201 and the inner rubber ring 202 so as to enhance the connection performance between the outer rubber ring 201 and the inner wall of the sleeve 1 and between the inner rubber ring 202 and the inner side end of the connecting pipe fitting 3, as shown in the combined figure 2.

Referring to fig. 3, the outer ends of the two connecting pipes 3 are used for the plug-in connection of the pipeline 7 and can be locked and fixed, preferably, a plurality of openings 303 are formed in the outer end edge of the connecting pipe 3 in a mode of being provided with threaded conical surfaces in an equiangular arrangement, and the outer end edge of the connecting pipe 3 is also in threaded fit with a locking nut 6, and the pipeline 7 is locked and fixed by tightening the locking nut 6.

Referring to fig. 1, the inner wall of the connecting pipe fitting 3 is integrally provided with an annular supporting position 302 adjacent to the inner side end, the two supporting rings 5 are respectively arranged inside the outer side ends of the two connecting pipe fittings 3, the two springs 4 are respectively arranged between the corresponding annular supporting positions 302 and the supporting rings 5, the outer end faces of the supporting rings 5 are provided with sealing gaskets 501, the sealing gaskets can be tightly pressed on the corresponding end faces of the pipelines 7 through the springs 4, the traditional thread fastening sealing mode is abandoned, the supporting rings 5 are combined through the springs 4 in the connecting pipe fitting 3, the sealing gaskets 501 on the supporting rings 5 are used for pressing and sealing the end parts of the pipelines 7, the screwing is not required, the abrasion of the sealing gaskets 501 is reduced, and the service life is prolonged. In addition, at least one sealing ring can be fixedly arranged on the inner wall of the outer side end of the connecting pipe fitting 3, so that the tightness between the inner wall of the connecting pipe fitting 3 and the outer wall of the connecting end of the pipeline 7 is further enhanced.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The utility model provides a pipeline joint leak protection device which characterized in that: the device comprises a sleeve (1), two adjusting rubber rings (2), two connecting pipe fittings (3), two springs (4) and two supporting rings (5), wherein annular protrusions (101) are integrally arranged at the center of the inner wall of the sleeve (1), the two adjusting rubber rings (2) are tightly plugged in the sleeve (1) and lean against the two sides of the annular protrusions (101), the adjusting rubber rings (2) are integrally formed by an outer rubber ring (201), an inner rubber ring (202) and deformation connecting parts (203) connected between the outer rubber ring and the inner rubber ring, the inner side ends of the two connecting pipe fittings (3) are respectively tightly plugged in the corresponding inner rubber ring (202), annular limiting plates (301) are integrally arranged at the middle positions of the outer wall of the connecting pipe fittings (3), two annular clamping grooves (102) are formed in the two sides of the inner wall of the sleeve (1), the connecting pipe fittings (3) are clamped in the corresponding annular clamping grooves (102) and can deviate in the radial direction, the outer side ends of the two connecting pipe fittings (3) are used for being fixedly connected with the inner side ends of a pipeline (7) and can be fixedly connected with the inner side ends (302) of the corresponding inner rubber rings (3), the two inner side ends (302) are fixedly connected with the inner side ends of the inner side ends (3) respectively arranged at the inner side ends of the two connecting pipe fittings (3), the two springs (4) are respectively arranged between the corresponding annular supporting position (302) and the supporting ring (5), the outer end face of the supporting ring (5) is provided with a sealing gasket (501), and the two springs (4) can be tightly pressed on the end face of the corresponding pipeline (7).

2. The pipe joint leakage prevention device according to claim 1, wherein: the deformation connecting part (203) of the adjusting rubber ring (2) is of an annular structure with a curved or broken line-shaped section.

3. The pipe joint leakage prevention device according to claim 2, wherein: the deformation connecting part (203) of the adjusting rubber ring (2) adopts two annular structures with arc-shaped sections, and the opening sides of the two annular structures are oppositely arranged and connected to the two sides between the outer rubber ring (201) and the inner rubber ring (202).

4. The pipe joint leakage prevention device according to claim 1, wherein: the outer wall of an outer rubber ring (201) of the adjusting rubber ring (2) is provided with at least one circular groove, a clamping ring is arranged at a position corresponding to the inner wall of the sleeve (1) in a protruding mode, and the adjusting rubber ring (2) is tightly clamped and connected with the clamping ring through the circular groove.

5. The pipe joint leakage prevention device according to claim 1, wherein: the inside of the outer rubber ring (201) and the inside of the inner rubber ring (202) of the adjusting rubber ring (2) are respectively provided with a reinforcing steel ring.

6. The pipe joint leakage prevention device according to claim 1, wherein: at least one sealing ring is fixedly arranged on the inner wall of the outer side end of the connecting pipe fitting (3).

7. The pipe joint leakage prevention device according to claim 1, wherein: the outer side end edge of the connecting pipe fitting (3) is provided with a plurality of notches (303) which are formed by machining a threaded conical surface and distributed at equal angles, the outer side end edge of the connecting pipe fitting (3) is also in threaded fit with a locking nut (6), and the pipeline (7) can be locked and fixed by tightening the locking nut (6).