CN217714063U - Quick connector for gas pipe - Google Patents

Abstract

The utility model provides a quick connector for gas pipe belongs to gas equipment technical field. It has solved the inconvenient scheduling problem of current quick connector for gas pipe equipment. This quick connector for gas pipe includes the bellows, nipple and outer joint, the nipple passes through internal thread and outer joint threaded connection, bellows cover is equipped with and is located between nipple and the outer joint and be annular and support and lean on the ring, support and lean on the ring for the conical surface that expands outward towards the tip inner wall of nipple side, bellows cover is equipped with and is located the nipple and supports the snap ring between the ring, snap ring outer lane department is contradicted by the conical surface, the snap ring is cyclic annular and has the breach, the nipple has radial interior protruding and supplies the supporting part that the snap ring supported, the inner or the seal cover of outer joint are contradicted in supporting and are leaned on the ring. The utility model has the advantages of convenient assembly, high production efficiency and the like.

Description

Quick connector for gas pipe

Technical Field

The utility model belongs to the technical field of gas equipment, a gas pipe accessory is related to, in particular to quick connector for gas pipe.

Background

The gas hose is used when the gas pipeline is connected with a gas valve or a gas stove, the existing gas hose is a flame-retardant PVC rubber hose, and the sealing performance and the firmness are required to be good when the gas hose is connected.

For example, chinese patent literature discloses a gas pipe joint [ application No.: 202021605025.1; authorization notice number: CN212745474U ], which comprises a corrugated pipe, an inner joint and an outer joint, wherein the inner end of the inner joint is used for the end part of the corrugated pipe to penetrate, the inner joint is in threaded connection with the outer joint through an external thread, a sealing structure is arranged between the inner joint and the corrugated pipe, the middle part of the outer joint is provided with a leakage detection hole which radially penetrates through the outer joint, an annular sealing gasket is arranged between the inner joint and the corrugated pipe, the inner wall of the sealing gasket is abutted against the outer wall of the corrugated pipe and the outer wall of the sealing gasket is abutted against the inner wall of the inner joint, the inner wall of the outer joint is provided with a retaining shoulder which radially protrudes inwards and is used for the outer end of the sealing gasket to abut against, the leakage detection hole is communicated to a cavity between the sealing gasket and the outer joint, the corrugated pipe is clamped with a clamping ring which supports the inner end of the sealing gasket, and the inner wall of the inner joint is provided with a convex shoulder which radially protrudes inwards and supports the inner end of the clamping ring.

Foretell gas union coupling connection steadiness is good, and the leakproofness is good, and job stabilization nature is good, but when the equipment, need use calliper to cramp the snap ring to the snap ring of will contracting is impressed the nipple, later sheathes sealed pad again, screws up the outer joint after that, assembles inconveniently like this, has reduced production efficiency.

Disclosure of Invention

The utility model aims at providing a quick connector for gas pipe that equipment is convenient, production efficiency is high to the above-mentioned problem that exists among the prior art.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a quick connector for gas pipe, includes bellows, inner joint and outer joint, the inner joint supply the tip of bellows to penetrate and be equipped with sealing mechanism between inner joint and the bellows, the tip overcoat that the bellows wore out the inner joint have the seal cover sealed in the outer joint inner wall, the inner wall of outer joint keep off the shoulder that the seal cover outer end was contradicted in having radially protruding and supplying, a serial communication port, the inner joint pass through internal thread and outer joint threaded connection, bellows cover be located between inner joint and the outer joint and be annular and support the ring, support the ring and for the conical surface that expands outward towards the tip inner wall of inner joint side, bellows cover be located the inner joint and support the snap ring between the ring, snap ring outer lane department is contradicted by the conical surface, the snap ring is cyclic annular and has the breach, the inner joint has radially protruding and supplies the snap ring to support the supporting part that supports, the inner or the seal cover of outer joint support the ring in supporting.

In the quick connector for the gas pipe, the snap ring is provided with an annular step part connected with the conical surface, the snap ring is positioned between the step part and the supporting part, and the diameter of the snap ring is greater than the height of the conical surface.

In the quick connector for a gas pipe, the inner joint has a leakage detection hole penetrating in a radial direction, and an inner end of the leakage detection hole communicates with a region between the abutting ring and the support portion.

In the quick connector for the gas pipe, the inner end of the sealing sleeve is provided with a flange which is turned outwards and is in a ring shape, and the flange is positioned between the abutting ring and the inner end of the outer connector.

In the quick connector for the gas pipe, the outer end of the sealing sleeve is provided with the check ring which is turned inwards and is in a ring shape, and the check ring is positioned between the end part of the corrugated pipe and the check shoulder.

In the quick connector for the gas pipe, the sealing mechanism comprises a sealing ring embedded in the inner wall of the inner connector, a sheath is sleeved outside the corrugated pipe, and the sealing ring is sealed on the outer wall of the sheath.

Compared with the prior art, the quick connector for the gas pipe is convenient to assemble, high in production efficiency, good in sealing performance, convenient to detect and maintain and good in use safety.

Drawings

Fig. 1 is a perspective view of the quick connector for a gas pipe.

Fig. 2 is a sectional view showing the structure of the quick connector for a gas pipe.

Fig. 3 is a perspective view of the quick connector for a gas pipe with the inner joint and the outer joint removed.

Fig. 4 is a perspective view of the abutment ring of the quick connector for a gas pipe.

In the figure, 1, bellows; 2. an inner joint; 3. an outer joint; 4. sealing sleeves; 5. a shoulder block; 6. an abutment ring; 7. a conical surface; 8. a snap ring; 9. a support portion; 10. a step portion; 11. a leak detection hole; 12. flanging; 13. a retainer ring; 14. a seal ring; 15. a sheath.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the quick connector for a gas tube includes a bellows 1, an inner joint 2 and an outer joint 3, the inner joint 2 provides for the end of the bellows 1 to penetrate and a sealing mechanism is provided between the inner joint 2 and the bellows 1, the end of the bellows 1 penetrating out of the inner joint 2 is sleeved with a sealing sleeve 4 sealed on the inner wall of the outer joint 3, the inner wall of the outer joint 3 has a retaining shoulder 5 protruding inward in the radial direction and supporting the outer end of the sealing sleeve 4, the inner joint 2 is in threaded connection with the outer joint 3 through an internal thread, the bellows 1 is sleeved with a supporting ring 6 located between the inner joint 2 and the outer joint 3 and having an annular shape, the inner wall of the supporting ring 6 facing the inner joint 2 side is an outwardly expanded conical surface 7, the bellows 1 is sleeved with a clamping ring 8 located between the inner joint 2 and the supporting ring 6, the outer ring of the clamping ring 8 is abutted by the abutting 7, the clamping ring 8 is in an annular shape and has a gap, the inner joint 2 has a supporting portion 9 protruding inward in the radial direction and supporting the clamping sleeve or 4 abutted against the supporting ring 6.

This is during quick connector for gas pipe assembles, earlier pass nipple 2 with bellows 1, later with snap ring 8, support ring 6, seal cover 4 overlaps in proper order on the tip that nipple 2 was worn out to bellows 1, make outer joint 3 and nipple 2 threaded connection after that, conflict in supporting ring 6 until inner or the seal cover 4 of outer joint 3, support ring 6 to 2 side displacements of nipple, conical surface 7 extrusion snap ring 8, supporting part 9 supplies the jump ring to contradict, snap ring 8 only can radially contract and lock in the round ring channel of bellows 1, tighten outer joint 3 again, the equipment has just been accomplished, because saved in the past with calliper with snap ring 8 cramp, the process of nipple 2 impresses, so this quick connector for gas pipe assembles conveniently, high production efficiency, and sealing mechanism, the leakproofness has been guaranteed to seal cover 4, effectively avoid the gas to leak.

In more detail, in the present embodiment, the snap ring 8 has an annular step portion 10 connected to the tapered surface 7, the snap ring 8 is located between the step portion 10 and the support portion 9, and the diameter of the snap ring 8 is greater than the height of the tapered surface 7. Screw up the in-process at outer joint 3, 7 extrusion snap rings 8 of conical surface lean on the inner that leans on ring 6 can not contradict in inner joint 2 all the time, guarantee that the assembling process is smooth and easy, screw up the back when outer joint 3, snap ring 8 locking is in bellows 1, and step portion 10 and supporting part 9 are spacing with 8 locking of snap ring, and it is good to connect the steadiness.

The nipple 2 has a radially through-going leak detection hole 11, the inner end of the leak detection hole 11 communicating with the area between the abutment ring 6 and the support 9. Because the diameter of snap ring 8 is greater than the height of conical surface 7, so it has the cavity to lean on the region between ring 6 and the supporting part 9 to have, if seal cover 4 department does not have completely sealed, the gas can get into and lean on the region between ring 6 and the snap ring 8, just can the short-term test gas leak through leakage detection hole 11, and the detection and the maintenance of being convenient for have improved the safety in utilization.

The inner end of the sealing sleeve 4 is provided with a flanging 12 which is turned outwards and is in a ring shape, the flanging 12 is positioned between the abutting ring 6 and the inner end of the outer joint 3, after the outer joint 3 is screwed down, the inner end of the outer joint 3 and the abutting ring 6 clamp the flanging 12, and the flanging 12 ensures that the sealing property between the abutting ring 6 and the inner end of the outer joint 3 is good, so that the gas leakage is further avoided; the outer end of the sealing sleeve 4 is provided with a retainer ring 13 which is turned inwards and is in a ring shape, the retainer ring 13 is positioned between the end part of the corrugated pipe 1 and the retainer shoulder 5, and after the outer joint 3 is screwed down, the retainer shoulder 5 is abutted to the retainer ring 13, so that the retainer ring 13 is sealed at the end part of the corrugated pipe 1, the sealing performance is improved, and the gas leakage is further avoided.

Sealing mechanism includes in this embodiment that the 2 inner walls of nipple inlay the sealing washer 14 that is equipped with, and bellows 1 overcoat has sheath 15, and sealing washer 14 is sealed in sheath 15 outer walls, and sheath 15 plays the guard action to bellows 1, and sealing washer 14 has guaranteed the leakproofness between nipple 2 and bellows 1, avoids the gas to leak.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (6)

1. A quick connector for a gas pipe comprises a corrugated pipe (1), an inner connector (2) and an outer connector (3), the end part of the corrugated pipe (1) penetrates through the inner joint (2), a sealing mechanism is arranged between the inner joint (2) and the corrugated pipe (1), the end part of the corrugated pipe (1) penetrating out of the inner joint (2) is sleeved with a sealing sleeve (4) sealed on the inner wall of the outer joint (3), the inner wall of the outer joint (3) is provided with a retaining shoulder (5) which is inwards convex in the radial direction and is abutted by the outer end of the sealing sleeve (4), it is characterized in that the inner joint (2) is in threaded connection with the outer joint (3) through internal threads, the corrugated pipe (1) is sleeved with an annular abutting ring (6) which is positioned between the inner joint (2) and the outer joint (3), the inner wall of the end part of the abutting ring (6) facing the inner joint (2) is an outward-expanding conical surface (7), bellows (1) cover be equipped with and be located nipple (2) and support and lean on snap ring (8) between ring (6), snap ring (8) outer lane department is contradicted by conical surface (7), snap ring (8) are cyclic annular and have a breach, nipple (2) have radially inwards protruding and supply snap ring (8) to support portion (9) that support to support, the inner of outer joint (3) or seal cover (4) are contradicted in supporting and are leaned on ring (6).

2. The quick connector for the gas pipe as claimed in claim 1, wherein the snap ring (8) has an annular step portion (10) connected to the tapered surface (7), the snap ring (8) is located between the step portion (10) and the support portion (9), and the diameter of the snap ring (8) is greater than the height of the tapered surface (7).

3. The quick-connect coupling for gas pipes according to claim 2, characterized in that said inner coupling (2) has a leakage detection hole (11) passing through it in a radial direction, the inner end of said leakage detection hole (11) communicating with the area between the abutment ring (6) and the support (9).

4. The quick connector for the gas pipe as claimed in claim 1, 2 or 3, wherein the inner end of the sealing sleeve (4) is provided with a flange (12) which is turned outwards and is in a ring shape, and the flange (12) is located between the abutting ring (6) and the inner end of the outer connector (3).

5. The quick connector for the gas pipe as claimed in claim 4, wherein the outer end of the sealing sleeve (4) is provided with a retaining ring (13) which is turned inwards and is in a ring shape, and the retaining ring (13) is positioned between the end of the corrugated pipe (1) and the retaining shoulder (5).

6. The quick connector for the gas pipe as claimed in claim 1, 2 or 3, wherein the sealing mechanism comprises a sealing ring (14) embedded in the inner wall of the nipple (2), a sheath (15) is sleeved outside the corrugated pipe (1), and the sealing ring (14) is sealed on the outer wall of the sheath (15).

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