CN216520074U

CN216520074U - External thread joint is connected at no dead angle

Info

Publication number: CN216520074U
Application number: CN202220029055.5U
Authority: CN
Inventors: 黄存海
Original assignee: Wenzhou Yuanhua Fluid Equipment Co ltd
Current assignee: Wenzhou Yuanhua Fluid Equipment Co ltd
Priority date: 2022-01-07
Filing date: 2022-01-07
Publication date: 2022-05-13
Anticipated expiration: 2032-01-07

Abstract

The utility model discloses a dead-corner-free connection external thread connector which comprises a first connector and a second connector, wherein the first connector and the second connector are in threaded connection to form a butt joint section, one end of the second connector is provided with a drainage tube, the outer peripheral wall of the drainage tube is provided with a sealing convex ring, the inner peripheral wall of the first connector is provided with a sealing bulge, the outer peripheral wall of the drainage tube is provided with a sealing gasket, the sealing gasket extends towards one side of the sealing convex ring and is gradually flared outwards to form a sealing inclined plane, an installation cavity is formed between the sealing convex ring and the butt joint section between the inner peripheral wall of the first connector and the outer peripheral wall of the drainage tube, a sealing assembly is arranged in the installation cavity, one end of the first connector, which faces towards the second connector, is provided with an outwards extending sealing boss, and the second connector is provided with a sealing annular groove corresponding to the sealing boss. The utility model has the following advantages and effects: the sealing device has multiple sealing, so that a better sealing effect is achieved, the service life is longer, and the sealing device can be suitable for high-pressure use conditions.

Description

External thread joint is connected at no dead angle

Technical Field

The utility model relates to a connector, in particular to a dead-corner-free connection external thread connector.

Background

The connection between the equipment and the pipeline or between the pipeline and the pipeline is generally realized by rapidly completing the butt joint installation through quick-connect joints, and the quick-connect joints are various in types, including threaded joints, clamp joints and the like.

The existing threaded joint comprises a first joint, a second joint and a sealing ring, wherein the first joint and the second joint are in threaded connection, the sealing ring is arranged between the first joint and the second joint, and the sealing between the first joint and the second joint is realized through the arranged sealing ring. The sealing effect of the structure can be suitable for common working conditions, and once the structure is applied to some high-pressure working conditions, the sealing structure cannot achieve good sealing effect, even if a certain sealing effect can be achieved, the service life is extremely short; the present invention was made in light of the above existing problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a dead-corner-free connecting external thread joint which is provided with a plurality of seals, so that a better sealing effect is achieved, the service life is longer, and the dead-corner-free connecting external thread joint can be suitable for high-pressure use working conditions.

The technical purpose of the utility model is realized by the following technical scheme: a dead-angle-free connection external thread joint comprises a first joint and a second joint, wherein the first joint and the second joint are in threaded connection to form a butt joint section, one end of the second joint is provided with a drainage tube extending into the inside of the first joint, the drainage tube peripheral wall is provided with a sealing convex ring, the inner peripheral wall of the first joint is provided with a sealing bulge, the drainage tube peripheral wall is positioned at one side, close to the sealing bulge, of the sealing convex ring and is provided with a sealing gasket, the sealing gasket extends towards one side of the sealing convex ring and gradually flares outwards to form a sealing inclined plane, an installation cavity is formed between the sealing convex ring and the butt joint section between the inner peripheral wall of the first joint and the drainage tube peripheral wall, a sealing assembly is arranged in the installation cavity, one end, facing the second joint, of the first joint is provided with an outwardly extending sealing boss, and a sealing ring groove for embedding the second joint is formed corresponding to the position of the sealing boss, the first joint and the second joint are in threaded connection to synchronously drive the sealing boss to abut against the sealing ring groove, the sealing inclined plane to abut against the sealing bulge, and the sealing convex ring to abut against the sealing bulge.

Through adopting above-mentioned technical scheme, first joint and second connect threaded connection to realize sealed boss and sealed annular, sealed inclined plane and sealed arch, sealed bulge and sealed protruding adjustable and need not extra drive power between two liang, sealed inclined plane cooperation sealed protruding constitutes soft seal, sealed boss cooperation sealed annular constitutes hard seal, sealed bulge cooperation sealed protruding constitutes hard seal, the seal assembly who deuterogamies the setting forms four sealings, thereby reach better sealed effect and life is longer, can be applicable to highly compressed service condition.

Further setting the following steps: the position of the sealing convex ring corresponding to the sealing washer is provided with a positioning groove for the sealing washer to be embedded, the sealing convex ring is abutted against the position of the sealing bulge to form a sealing part, and a pressure relief area is formed between the sealing part and the sealing inclined plane.

By adopting the technical scheme, the positioning groove is used for limiting the sealing washer, so that the sealing washer is prevented from displacing when stressed, and the sealing washer can be better abutted against the sealing bulge to form sealing; and the arrangement also increases the sealing contact area between every two, thereby achieving better sealing effect. When pressure enters the pressure relief area through the sealing washer, the pressure relief effect is realized on the pressure through the pressure relief area, the pressure is weakened, and therefore stress on the sealing portion is weakened, and a better sealing effect can be achieved.

Further setting the following steps: the sealing assembly sequentially comprises an isolating ring, a abutting spring and a sealing ring along the direction from the sealing convex ring to the butt joint section, the isolating ring is arranged in the installation cavity in a sealing sliding mode, one end of the abutting spring abuts against the sealing ring, and the other end of the abutting spring abuts against the isolating ring.

By adopting the technical scheme, the abutting spring applies the sealing force abutting against the butt joint section to the sealing ring, so that the sealing ring achieves better sealing performance. When pressure passes through the sealing washer and the sealing convex ring, driving force is applied to the isolating ring, the isolating ring is driven to move towards one side of the sealing ring, and the abutting spring arranged in a matched mode forms dual acting force on the sealing ring, so that the sealing ring has stronger sealing driving force, and a better sealing effect is achieved.

Further setting the following steps: an annular expanding groove is formed in one end face, facing the abutting spring, of the sealing ring, the section of the expanding groove is V-shaped, a supporting ring is arranged in the expanding groove, and the abutting spring abuts against the supporting ring.

Through adopting above-mentioned technical scheme, support tight spring drive supporting ring and support tightly in expanding the groove, expand the groove atress and change the effect direction of power under the effect of its shape, make the sealing washer can be better towards the internal perisporium of first joint and the periphery wall deformation of guiding tube support tightly to this reaches better sealed effect.

Further setting the following steps: the seal ring is characterized in that a stress annular groove is formed in one end face, facing the seal ring, of the isolating ring, and an opening of the stress annular groove faces the position between the seal ring and the inner peripheral wall of the first joint.

By adopting the technical scheme, the pressure penetrates through the sealing washer and the sealing convex ring and then moves towards the isolating ring and enters the stress ring groove, and the stress ring groove enables the pressure to more stably drive the isolating ring to move so as to apply more stable abutting sealing force on the sealing ring through the abutting spring; and stable sealing sliding of the isolating ring can be better realized through the arrangement of the stress ring groove.

Further setting the following steps: the cross section of the sealing boss is in an isosceles trapezoid shape, and two side walls of the sealing boss are abutted to the sealing ring grooves tightly.

By adopting the technical scheme, the isosceles trapezoid sealing boss is matched with the sealing ring groove to form tighter abutting sealing force in the process of abutting gradually, so that a better sealing effect is achieved.

Further setting the following steps: the peripheral wall of the second joint forms a driving part.

Through adopting above-mentioned technical scheme, the drive second that can be more convenient through the drive division connects and rotates to this realizes inseparable locking between the two, realizes better sealed.

Further setting the following steps: and a sealing groove is arranged on one end face of the second joint, which faces away from the first joint, and a plurality of tight supporting salient points are distributed in the sealing groove.

Through adopting above-mentioned technical scheme, place the sealing washer in the seal groove, the second connects the cooperation pipe fitting and exerts stronger deformation to the sealing washer through the tight bump that supports that sets up and support tight power at the in-process that presss from both sides tight sealing washer to this makes the sealing washer reach inseparabler tight sealed effect that supports.

In conclusion, the utility model has the following beneficial effects: the utility model has multi-sealing, thereby achieving better sealing effect and longer service life, and can be suitable for high-pressure use conditions.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a sectional view of the embodiment;

fig. 3 is an enlarged view of a portion a in fig. 2.

In the figure: 1. a first joint; 2. a second joint; 3. a butt joint section; 4. a drainage tube; 5. a sealing convex ring; 6. sealing the protrusion; 7. a sealing gasket; 8. sealing the inclined plane; 9. a mounting cavity; 10. a seal assembly; 101. an isolating ring; 102. the spring is tightly propped; 103. a seal ring; 11. sealing the boss; 12. sealing the ring groove; 13. positioning a groove; 14. a sealing part; 15. a pressure relief area; 16. expanding the groove; 17. a support ring; 18. a force-bearing ring groove; 19. a drive section; 20. a sealing groove; 21. the salient points are tightly propped.

Detailed Description

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

Referring to fig. 1 to 3, a dead-corner-free connection male screw joint comprises a first joint 1 and a second joint 2, wherein the first joint 1 and the second joint 2 are in threaded connection to form a butt joint section 3. One end of the second connector 2 is integrally provided with a drainage tube 4 extending into the first connector 1, the peripheral wall of the drainage tube 4 is integrally provided with a sealing convex ring 5, and the inner peripheral wall of the first connector 1 is integrally provided with a sealing bulge 6. The sealing ring 7 is arranged on one side, close to the sealing bulge 6, of the peripheral wall of the drainage tube 4, the sealing ring 7 extends towards one side of the sealing bulge ring 5 and is outwards gradually flared to form a sealing inclined surface 8. The position of the sealing convex ring 5 corresponding to the sealing washer 7 is provided with a positioning groove 13 for embedding the sealing washer 7.

The position that lies in between sealed bulge loop 5 and the butt joint section 3 between 1 internal perisporium of first joint and the 4 periphery walls of drainage tube forms an installation cavity 9, be equipped with seal assembly 10 in the installation cavity 9, first joint 1 is provided with outside extension's sealed boss 11 towards the one end an organic whole of second joint 2, second joint 2 offers the sealed annular 12 that supplies its embedding corresponding to the position of sealed boss 11, first joint 1 connects 2 threaded connection with the second and comes synchronous drive sealed boss 11 to support tightly in sealed annular 12, sealed inclined plane 8 supports tightly in sealed arch 6, sealed bulge loop 5 supports tightly in sealed arch 6. The cross section of the sealing boss 11 is in an isosceles trapezoid shape, and two side walls of the sealing boss 11 are abutted against the sealing ring groove 12.

The sealing collar 5 forms a sealing portion 14 against the sealing protrusion 6, and a pressure relief area 15 is formed between the sealing portion 14 and the sealing slope 8. The sealing assembly 10 sequentially comprises an isolation ring 101, a butting spring 102 and a sealing ring 103 along the direction from the sealing convex ring 5 to the butting section 3, and the isolation ring 101 is arranged in the mounting cavity 9 in a sealing and sliding manner. An annular expanding groove 16 is formed in one end face, facing the resisting spring 102, of the sealing ring 103, the section of the expanding groove 16 is in a V shape, a supporting ring 17 is arranged in the expanding groove 16, one end of the resisting spring 102 is abutted against the supporting ring 17, the other end of the resisting spring 102 is abutted against the isolating ring 101, and the resisting spring 102 is fixedly connected with the supporting ring 17. One end face of the isolating ring 101 facing the sealing convex ring 5 is provided with a stress ring groove 18, and an opening of the stress ring groove 18 faces a position between the sealing convex ring 5 and the inner peripheral wall of the first joint 1. The outer peripheral wall of the second joint 2 forms a driving portion 19, and the outer peripheral shape of the driving portion 19 is hexagonal. A sealing groove 20 is formed in one end face, back to the first connector 1, of the second connector 2, and a plurality of abutting convex points 21 are integrally distributed in the sealing groove 20.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a no dead angle connection thread connection connects, includes that first joint (1) and second connect (2), threaded connection forms one and docks section (3), its characterized in that between first joint (1) and second joint (2) the two: one end of the second connector (2) is provided with a drainage tube (4) extending into the first connector (1), the peripheral wall of the drainage tube (4) is provided with a sealing convex ring (5), the inner peripheral wall of the first connector (1) is provided with a sealing bulge (6), one side, close to the sealing bulge (6), of the peripheral wall of the drainage tube (4) is provided with a sealing gasket (7), the sealing gasket (7) extends towards one side of the sealing convex ring (5) and is gradually flared outwards to form a sealing inclined plane (8), a mounting cavity (9) is formed between the inner peripheral wall of the first connector (1) and the peripheral wall of the drainage tube (4) and is positioned between the sealing convex ring (5) and the butt joint section (3), a sealing assembly (10) is arranged in the mounting cavity (9), and a sealing boss (11) extending outwards is arranged at one end, facing the second connector (2), of the first connector (1), the second connector (2) is provided with a sealing ring groove (12) for embedding the sealing boss (11) corresponding to the position of the sealing boss (11), the first connector (1) and the second connector (2) are in threaded connection to synchronously drive the sealing boss (11) to abut against the sealing ring groove (12), the sealing inclined plane (8) abuts against the sealing bulge (6), and the sealing convex ring (5) abuts against the sealing bulge (6).

2. The blind-connection male adapter according to claim 1, wherein: the sealing convex ring (5) is provided with a positioning groove (13) for embedding the sealing gasket (7) at a position corresponding to the sealing gasket (7), the sealing convex ring (5) abuts against the sealing protrusion (6) to form a sealing part (14), and a pressure relief area (15) is formed between the sealing part (14) and the sealing inclined plane (8).

3. The blind-connection male adapter according to claim 1, wherein: the sealing assembly (10) sequentially comprises an isolating ring (101), a abutting spring (102) and a sealing ring (103) along the direction from the sealing convex ring (5) to the butt joint section (3), the isolating ring (101) is arranged in the installation cavity (9) in a sealing sliding mode, one end of the abutting spring (102) abuts against the sealing ring (103), and the other end of the abutting spring abuts against the isolating ring (101).

4. The blind-connection pin joint as set forth in claim 3, wherein: an annular expanding groove (16) is formed in one end face, facing the abutting spring (102), of the sealing ring (103), the cross section of the expanding groove (16) is V-shaped, a supporting ring (17) is arranged in the expanding groove (16), and the abutting spring (102) abuts against the supporting ring (17).

5. The blind-connection pin joint as set forth in claim 3, wherein: the isolating ring (101) is provided with a stress ring groove (18) towards one end face of the sealing convex ring (5), and the opening of the stress ring groove (18) faces the position between the sealing convex ring (5) and the inner peripheral wall of the first joint (1).

6. The blind-connection male adapter according to claim 1, wherein: the cross-sectional shape of sealed boss (11) is isosceles trapezoid, the both sides wall of sealed boss (11) supports tightly in sealed annular (12).

7. The blind-connection male adapter according to claim 1, wherein: the peripheral wall of the second joint (2) forms a driving part (19).

8. The blind-connection male adapter according to claim 1, wherein: one end face, back to the first joint (1), of the second joint (2) is provided with a sealing groove (20), and a plurality of tight supporting salient points (21) are distributed in the sealing groove (20).