CN214999953U

CN214999953U - Corrugated pipe joint

Info

Publication number: CN214999953U
Application number: CN202120053853.7U
Authority: CN
Inventors: 黄伟; 林爱素
Original assignee: Ningbo Tianxin Metal Hose Co ltd
Current assignee: Ningbo Tianxin Metal Hose Co ltd
Priority date: 2021-01-08
Filing date: 2021-01-08
Publication date: 2021-12-03
Anticipated expiration: 2031-01-08

Abstract

The utility model relates to a bellows joint, this joint include main joint, auxiliary joint, and main joint one end is equipped with the main interface to through the main interface and the connection interface screw thread locking connection of auxiliary joint one end, the auxiliary joint other end is equipped with the tube hole that is used for the cross-under bellows. A section of guide hole with gradually reduced caliber is formed from a connecting interface to a pipe hole in the auxiliary joint, a C-shaped clamp ring with one side opposite to the end part of a main interface of the main joint is arranged in the guide hole, a C-shaped clamp ring main body is a C-shaped clamp ring with elastic expansion and contraction, trapezoidal teeth are uniformly distributed in the inner diameter of the C-shaped clamp ring along the circumferential direction, in an initial state, the inner hole of the C-shaped clamp ring is smaller than or equal to the outer diameter of a corrugated pipe to be connected, and when the main joint is locked and connected with the auxiliary joint along with the main joint, the C-shaped clamp ring slides along the guide hole and the caliber is reduced to the extent that the trapezoidal teeth are clamped and limited with an annular groove of the corrugated pipe in the auxiliary joint. Above-mentioned C shape snap ring structure can guarantee again that the intensity that stops is reliable when easily deforming, improves bellows anticreep reliability, long service life.

Description

Corrugated pipe joint

Technical Field

The utility model relates to a quick-operation joint is a bellows joint.

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. Therefore, the existing anti-falling structure of the quick joint needs to be improved.

Disclosure of Invention

In order to overcome the defects, the utility model aims to provide a corrugated pipe joint to the field, which solves the technical problem that the reliability of the anti-disengaging structure of the existing similar corrugated pipe joint is not good enough. The purpose is realized by the following technical scheme.

The utility model provides a bellows connects, this connects includes main joint, secondary joint, and main joint one end is equipped with main interface to through the main interface and the connection interface screw thread lock joint of secondary joint one end, the secondary joint other end is equipped with the tube hole that is used for the cross-under bellows. Its structural feature lies in by connect interface to the pipe hole formation one section bore guiding hole that diminishes in the auxiliary joint, be equipped with one side in the guiding hole with the relative C shape snap ring of main interface tip of main joint, the C shape snap ring main part is for having the C shape rand of elasticity expansion and contraction, and the even interval distribution in circumference is followed to C shape rand internal diameter and is equipped with trapezoidal tooth, under the initial condition, the hole of C shape snap ring is less than or equal to the bellows external diameter of treating the connection, when being connected along main joint and auxiliary joint locking, the C shape snap ring slides and the bore reduces extremely along the guiding hole trapezoidal tooth with the annular groove of bellows block spacing in the auxiliary joint. Through above-mentioned structure, utilize the extrusion deformation of C shape snap ring to block the bellows to reach the purpose that prevents that the bellows from deviating from, and above-mentioned C shape snap ring structural design adds the structure of trapezoidal tooth for the circle body, thereby when can easily deform, can guarantee again that the intensity that blocks is reliable, improve bellows anticreep reliability.

Two ends of the opening of the C-shaped snap ring are provided with at least partial trapezoidal teeth. Through this structure, improve the intensity of C shape snap ring opening part to non-deformable effectively guarantees the reliability that C shape snap ring and bellows annular groove blocked.

The tooth tops of the trapezoidal teeth of the C-shaped snap ring are planes or arc surfaces. Through the structure, point contact or surface contact is formed between the trapezoidal teeth of the C-shaped snap ring and the annular groove of the corrugated pipe, the point contact is not easy to wear, and the surface contact is reliable.

And a U-shaped opening or a trapezoidal opening is formed between adjacent trapezoidal teeth of the C-shaped snap ring. Through this structure, be favorable to the deformation of C shape snap ring.

The main connector of the main connector is internally provided with a first sealing ring, the end face of the first sealing ring extends out of the end part of the main connector and abuts against the C-shaped clamping ring, and in an initial state, a stroke gap used for extruding the first sealing ring and expanding and sealing the end part of the corrugated pipe is arranged between the C-shaped clamping ring and the end part of the main connector. Through this structure, form reliable sealing connection when realizing that main joint, secondary joint connect the bellows.

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 discloses overall structure is comparatively simple, and the pipe connector operation is comparatively convenient, efficiency, and anticreep performance preferred, long service life is fit for the attach fitting use as all kinds of bellows, or the institutional advancement of like product.

Drawings

Fig. 1 is a schematic sectional view of the connecting bellows according to the present invention.

Fig. 2 is a schematic view of the plane structure of the C-shaped snap ring of the present invention.

Fig. 3 is a schematic view of a three-dimensional structure of the C-shaped snap ring of the present invention.

The sequence numbers and names in the figure are: 1. the main joint comprises a main joint body 101, a main interface 2, an auxiliary joint body 201, a connecting interface 202, pipe holes 203, guide holes 3, a C-shaped clamping ring 301, a C-shaped clamping ring 302, trapezoidal teeth 4, a first sealing ring 5, a corrugated pipe 6, a second sealing ring 7 and a protective sleeve.

Detailed Description

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

As shown in fig. 1-3, the bellows joint includes a main joint 1 and a sub joint 2, the main joint has a main joint 101 at one end and is screwed and locked with a connection joint 201 at one end of the sub joint through the main joint, and the sub joint has a pipe hole 202 at the other end for passing through the bellows 5. A section of guide hole 203 with a gradually-reduced caliber is formed in the auxiliary joint from the connecting interface to the pipe hole, a C-shaped clamp ring 3 with one side opposite to the end part of the main interface of the main joint is arranged in the guide hole, the main body of the C-shaped clamp ring is a C-shaped clamp ring 301 with elastic expansion and contraction, trapezoidal teeth 302 are uniformly distributed at intervals along the circumferential direction in the inner diameter of the C-shaped clamp ring, and tooth tops of the trapezoidal teeth are arc surfaces. In an initial state, the inner hole of the C-shaped snap ring is smaller than or equal to the outer diameter of the corrugated pipe to be connected, and when the C-shaped snap ring is locked and connected with the auxiliary connector along with the main connector, the C-shaped snap ring slides along the guide hole and the caliber of the C-shaped snap ring is reduced to be limited until the trapezoidal teeth are clamped and limited with the annular groove of the corrugated pipe in the auxiliary connector. Two ends of the opening of the C-shaped snap ring are respectively provided with a half of trapezoidal teeth so as to improve the strength of the opening of the C-shaped snap ring. A U-shaped opening is formed between adjacent trapezoidal teeth of the C-shaped clamping ring, so that the deformation effect is facilitated.

The main connector 101 of the main joint 1 is internally provided with a first sealing ring 4, the end face of the first sealing ring extends out of the end part of the main connector and abuts against the C-shaped snap ring 3, and in an initial state, a stroke gap used for extruding the first sealing ring and expanding and sealing the end part of the corrugated pipe 5 is arranged between the C-shaped snap ring and the end part of the main connector. The inner diameter of the pipe hole 202 of the auxiliary joint 2 is provided with an annular sealing groove, and a second sealing ring 6 for sealing a protective sleeve 7 of the corrugated pipe outer sleeve is arranged in the annular sealing groove. The structure is favorable for ensuring the sealing effect of the connection of the corrugated pipe.

The above contents are intended to illustrate the technical means of the present invention, and do not limit the technical scope of the present invention. Obvious modifications to the invention, combined with the prior common general knowledge, are also within the scope of the claims of the invention.

Claims

1. A corrugated pipe joint comprises a main joint (1) and an auxiliary joint (2), wherein one end of the main joint is provided with a main interface (101) and is in threaded locking connection with a connecting interface (201) at one end of the auxiliary joint through the main interface, and the other end of the auxiliary joint is provided with a pipe hole (202) for penetrating and connecting a corrugated pipe (5); its characterized in that form one section bore guiding hole (203) that diminishes by connect interface (201) to tube hole (202) in sub-joint (2), be equipped with one side in the guiding hole with the relative C shape snap ring of main interface (101) tip of main joint (1), C shape snap ring main part is for the C shape rand that has the elasticity harmomegathus, and the even interval distribution of circumference is followed to C shape rand internal diameter and is equipped with trapezoidal tooth, under the initial condition, the hole of C shape snap ring is less than or equal to the bellows external diameter of treating connecting, when being connected along main joint and sub-joint locking, the C shape snap ring slides along the guiding hole and the bore reduces extremely trapezoidal tooth with the annular groove of bellows (5) blocks spacingly in the sub-joint.

2. Bellows joint according to claim 1, wherein both ends at the opening of the C-shaped snap ring (3) are provided with at least partly trapezoidal teeth (302).

3. Bellows joint according to claim 1, wherein the crest of the trapezoidal teeth (302) of the C-shaped snap ring (3) is a plane or a circular arc.

4. Bellows joint according to claim 1, wherein adjacent trapezoidal teeth (302) of the C-shaped snap ring (3) form a U-shaped or trapezoidal mouth between them.

5. The corrugated pipe joint according to claim 1, characterized in that a first sealing ring (4) is arranged in the main joint (101) of the main joint (1), the end surface of the first sealing ring extends out of the end of the main joint and abuts against the C-shaped snap ring (3), and in an initial state, a stroke gap for extruding the first sealing ring and expanding the end of the sealing corrugated pipe (5) is arranged between the C-shaped snap ring and the end of the main joint.

6. Bellows joint according to claim 1, wherein the bore (202) of the secondary joint (2) has an internal diameter provided with an annular seal groove in which a second sealing ring (6) is arranged for sealing against a protective sleeve (7) of the bellows jacket.