CN215334969U - Corrugated pipe quick joint with clamping ring assembly - Google Patents

Abstract

The utility model relates to a corrugated pipe quick connector with a snap ring assembly, wherein the snap ring assembly comprises an open type snap ring and at least two arc pipe sections which are sleeved along the annular direction of the snap ring, gaps are arranged among the arc pipe sections along the annular direction of the snap ring, and the arc pipe sections of the snap ring assembly are clamped and fixed relative to the snap ring. Quick-operation joint includes the main joint, the auxiliary joint, main joint one end is equipped with the external screw thread interface, and through the internal screw thread interface screw thread locking connection of external screw thread interface and auxiliary joint one end, the auxiliary joint other end is equipped with the tube hole that is used for the cross-under bellows, form one section bore guiding hole that diminishes by internal screw thread interface to tube hole in the auxiliary joint, be equipped with the snap ring subassembly that one side is relative with main joint external screw thread interface tip in the guiding hole, and when following main joint and auxiliary joint locking connection, the snap ring subassembly slides along the guiding hole and the bore reduces to with the auxiliary joint in the annular groove of bellows block spacing. Above-mentioned structure connects comparatively conveniently, efficiency, and the anticreep performance is comparatively reliable and stable.

Description

Corrugated pipe quick joint with clamping ring assembly

Technical Field

The utility model relates to a pipe connector, in particular to a corrugated pipe quick connector with a snap ring assembly.

Background

The quick connector is a connector for quickly connecting or disconnecting pipelines, and is widely applied to the field of gas-liquid conveying. The existing joints of some gas pipelines need frequent replacement or repair and replacement, so the joints are basically connected by adopting quick joints. The existing quick connector usually comprises a connector sleeve, a sealing sleeve and a locking sleeve, wherein the sealing sleeve inside the connector sleeve and a butted pipeline form expansion sealing by screwing the connector sleeve and the locking sleeve, and when the butted pipeline is a corrugated pipe, the sealing sleeve can effectively expand the corrugated pipe when being extruded and expanded in the connector sleeve, so that the aim of preventing disengagement is fulfilled. However, the anti-dropping capability of the quick connection mode is limited, and when the gas-liquid pressure in the pipe is slightly higher, the risk of disengagement still exists. In order to improve the anti-drop performance, a snap ring structure is usually added in the pipe joint in the prior art, and the purpose of anti-drop is achieved by utilizing the clamping of the snap ring and the annular groove of the corrugated pipe. However, the existing snap ring structure is a common C-shaped snap ring, when the snap ring is designed to be thin, the elasticity is good, but the strength is difficult to guarantee, and when the snap ring is designed to be thick, the strength is good, but the elastic deformation capacity is poor, and the installation and the use are laborious. Therefore, the conventional snap ring structure and the pipe joint structure of the corrugated pipe need to be improved.

Disclosure of Invention

In order to overcome the defects, the utility model aims to provide a corrugated pipe quick connector with a snap ring assembly for the field, so that the technical problems of inconvenience in pipe connection and poor anti-falling reliability of the corrugated pipe caused by poor strength or deformation capacity of the conventional similar snap ring are solved. The purpose is realized by the following technical scheme.

A corrugated pipe quick joint with a snap ring assembly comprises an open type snap ring and at least two arc pipe sections which are sleeved along the annular direction of the snap ring, wherein gaps are formed between the arc pipe sections along the annular direction of the snap ring; above-mentioned snap ring subassembly not only has better deformability, and has the intensity of preferred, and the anticreep stops that the reliability is high, and life is longer. The quick connector comprises a main connector and an auxiliary connector, wherein an external thread interface is arranged at one end of the main connector and is in threaded locking connection with an internal thread interface at one end of the auxiliary connector through the external thread interface, and a pipe hole for connecting a corrugated pipe in a penetrating manner is formed in the other end of the auxiliary connector; the clamping ring assembly is structurally characterized in that each circular arc pipe section of the clamping ring assembly is fixed in a clamping mode relative to the clamping ring, a guide hole with a gradually-reduced caliber is formed from an internal thread connector to a pipe hole in the auxiliary connector, one side of the clamping ring assembly is arranged in the guide hole and opposite to the external thread connector end portion of the main connector, and when the clamping ring assembly is connected with the auxiliary connector in a locking mode along the main connector, the clamping ring assembly slides along the guide hole, the caliber of the clamping ring assembly is reduced to be limited by the clamping ring assembly and an annular groove of the corrugated pipe in the auxiliary connector in a clamping mode. The arc pipe section of the snap ring assembly is fixed and does not slide relative to the snap ring, and the snap ring assembly mainly depends on the elasticity of the snap ring to adjust the necking deformation of the snap ring assembly, so that the anti-falling purpose is achieved. Utilize the extrusion deformation of snap ring subassembly to block the bellows, the anticreep performance is comparatively stable, reliable, and the pipe connector uses comparatively convenient, swift, and efficiency is higher.

The snap ring is a C-shaped elastic metal wire. The clamping ring structure is simple, easy to produce and manufacture, low in cost and easy to deform.

The snap ring is a flat C-shaped elastic ring. The clamping ring has better annular holding capacity, so that the arc pipe sections are reliably distributed along the annular shape.

The arc pipe section is flat. Through this structure, the axial atress of snap ring subassembly is more stable, and the circular arc pipeline section is difficult for warping or damaging because of the axial extrusion.

The arc pipe section is a metal pipe section. Adopt metal material, intensity is comparatively reliable, and life is longer.

The main joint is characterized in that a first sealing ring is arranged in the external thread connector of the main joint, the end face of the first sealing ring extends out of the end part of the external thread connector and is abutted against the end part of the snap ring assembly, and a stroke gap used for extruding the first sealing ring and expanding the end part of the sealing corrugated pipe is arranged between the snap ring assembly and the end part of the external thread connector in an initial state. Through the structure, reliable sealing connection is formed when the main joint and the auxiliary joint are connected with the corrugated pipe.

And an annular sealing groove is formed in the inner diameter of the pipe hole of the auxiliary joint, and a second sealing ring used for sealing a protective sleeve sleeved outside the corrugated pipe is arranged in the annular sealing groove. Through this structure, further improve the sealed effect that the bellows is connected.

The utility model has the advantages of simple integral structure, easy production and manufacture, relatively low cost, convenient pipe joint use, high efficiency, good anti-falling performance and long service life, and is suitable for being used as an anti-falling snap ring and a pipe joint in various pipe joint fields or the improvement of the quick joint of the similar snap ring or the corrugated pipe.

Drawings

FIG. 1 is a schematic structural view of a snap ring assembly of the present invention, wherein the dotted line is a snap ring in a circular arc pipe section.

FIG. 2 is a cross-sectional structural schematic view of the snap ring assembly of FIG. 1.

Fig. 3 is a schematic cross-sectional view of the quick coupling for corrugated pipes according to the present invention.

The sequence numbers and names in the figure are: 1. the clamping ring assembly comprises a clamping ring assembly, 101, a clamping ring, 102, an arc pipe section, 2, a main joint, 201, an external thread connector, 3, an auxiliary joint, 301, an internal thread connector, 302, a pipe hole, 303, a guide hole, 4, a first sealing ring, 5, a corrugated pipe, 6, a second sealing ring, 7 and a protective sleeve.

Detailed Description

The utility model will now be further described with reference to the accompanying drawings.

As shown in fig. 1 and 2, the snap ring assembly includes an open type snap ring, and three arc pipe sections sleeved along the annular direction of the snap ring, wherein a gap is formed between each two arc pipe sections along the annular direction of the snap ring. And each arc pipe section of the clamping ring assembly is clamped and fixed relative to the clamping ring. The snap ring is a C-shaped elastic metal wire (such as a steel wire) or a C-shaped flat elastic ring (such as a metal gasket with a rectangular cross section), and the arc pipe section is a metal circular pipe or flat pipe.

As shown in fig. 3, the bellows quick coupling using the above snap ring assembly includes a main coupling 2, an auxiliary coupling 3, and a snap ring assembly 1, one end of the main coupling is an equipment connecting end or a pipe connecting end of an internal thread or an external thread, the other end of the main coupling is provided with an external thread connector 201, and is in thread locking connection with an internal thread connector 301 of one end of the auxiliary coupling through the external thread connector, the other end of the auxiliary coupling is provided with a pipe hole 302 for penetrating a bellows 5, an inner diameter of the pipe hole is provided with an annular sealing groove, and a second sealing ring 6 for sealing a protective sleeve 7 of an outer sleeve of the bellows is arranged in the sealing groove. A section of guide hole 303 with a gradually-reduced caliber is formed from the internal thread interface to the pipe hole in the auxiliary joint, a snap ring component 1 with one side opposite to the end part of the external thread interface of the main joint is arranged in the guide hole, and when the main joint is connected with the auxiliary joint in a locking manner, the snap ring component slides along the guide hole and the caliber is reduced to be clamped and limited with an annular groove of the corrugated pipe in the auxiliary joint. When connecting the bellows, be equipped with first sealing washer 4 in the external screw thread interface of main joint, and first sealing washer terminal surface stretches out external screw thread interface tip and offsets the snap ring subassembly, under the initial condition, be equipped with the stroke clearance that is used for extrudeing first sealing washer and expands tight sealed bellows tip between snap ring subassembly and the external screw thread interface tip, when the first sealing washer of snap ring subassembly extrusion promptly, form reliable sealedly between the external screw thread interface of main joint and the bellows.

The use method of the corrugated pipe quick joint comprises the following steps: insert bellows 5 tip along the tube hole 302 of auxiliary joint 3 to support tightly with the first sealing washer 4 in the female connection 201 of main joint 2, then screw main joint and auxiliary joint, can realize that the shrink of snap ring subassembly presss from both sides the arc recess of tight bellows, and extrudees first sealing washer simultaneously and realizes reliably sealing the bellows, and operation and use is comparatively convenient, efficiency.

The above description is intended to illustrate the technical means of the present invention, and not to limit the technical scope of the present invention. Obvious modifications or alterations to the present invention in combination with the prior art knowledge will be apparent to those skilled in the art and fall within the scope of the appended claims.

Claims (7)

1. A corrugated pipe quick joint with a snap ring assembly is disclosed, wherein the snap ring assembly (1) comprises an open type snap ring (101) and at least two arc pipe sections (102) which are sleeved along the annular direction of the snap ring, and gaps are formed between the arc pipe sections along the annular direction of the snap ring; the quick joint comprises a main joint (2) and an auxiliary joint (3), wherein one end of the main joint is provided with an external thread interface (201) and is in threaded locking connection with an internal thread interface (301) at one end of the auxiliary joint through the external thread interface, and the other end of the auxiliary joint is provided with a pipe hole (302) for connecting a corrugated pipe (5) in a penetrating way; the clamping ring assembly is characterized in that each circular arc pipe section (102) of the clamping ring assembly (1) is clamped and fixed relative to the clamping ring (101), a guide hole (303) with a gradually reduced caliber is formed from an internal thread connector (301) to a pipe hole (302) in the auxiliary connector (3), one side of the guide hole is opposite to the end part of an external thread connector (201) of the main connector (2), and when the main connector and the auxiliary connector are locked and connected, the clamping ring assembly slides along the guide hole and reduces the caliber to be clamped and limited with an annular groove of an internal corrugated pipe (5) of the auxiliary connector.

2. Bellows quick-connect with a snap-ring assembly according to claim 1, characterized in that the snap-ring (101) is a C-shaped elastic wire.

3. Bellows quick-connect with a snap-ring assembly according to claim 1, characterized in that the snap-ring (101) is a flat C-shaped elastic ring.

4. The bellows quick connector with a snap ring assembly of claim 1 wherein the radiused tube segment (102) is flat.

5. The bellows quick connector with a snap ring assembly of claim 1 wherein the radiused tube segment (102) is a metal tube segment.

6. The quick coupling for corrugated pipes with a snap ring assembly according to claim 1, wherein a first seal ring (4) is disposed in the male connector (201) of the main coupling (2), and an end surface of the first seal ring extends out of an end of the male connector and abuts against the snap ring assembly, and in an initial state, a stroke gap for extruding the first seal ring and expanding and sealing an end of the corrugated pipe is disposed between the snap ring assembly and the end of the male connector.

7. The quick coupling for corrugated pipe with snap ring assembly as claimed in claim 1, wherein the bore (302) of the secondary coupling (3) is provided with an annular sealing groove inside, and a second sealing ring (6) for sealing a protective sleeve (7) of the outer sleeve of corrugated pipe is arranged in the annular sealing groove.

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