Quick coupler of fuel gas corrugated pipe

Abstract

The utility model belongs to the technical field of corrugated pipe joints, and particularly relates to a quick coupler of a gas corrugated pipe, which comprises a corrugated pipe, a nut, a snap ring, an elastic retainer ring and a sealing ring. One side of the inner wall of the nut is a small-caliber inner wall, the other side of the inner wall of the nut is a large-caliber inner wall, and the small-caliber inner wall and the large-caliber inner wall are connected through an inclined inner wall; one end of the corrugated pipe extends into the large-diameter inner wall of the nut; the clamping ring is placed in the large-diameter inner wall of the nut, a small-diameter port of the clamping ring is clamped in a corrugated groove in the outer wall of the corrugated pipe, and a large-diameter port of the clamping ring abuts against the elastic check ring. The elastic check ring is clamped in the check ring groove, and the check ring groove is formed in the large-diameter inner wall of the nut. According to the gas corrugated pipe connector, the nut, the clamping ring and the elastic check ring are arranged, the corrugated pipe is clamped in the nut through the clamping ring, then the elastic check ring is used for locking, a threaded connection mode is replaced, the situation that threads are loosened is avoided, and the sealing performance between the gas corrugated pipe and the connector is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of bellows joints, in particular to a quick-install joint for a gas bellows. Background Art

[0002] The bellows is a tubular structure that can be folded, expanded, and bent. The bellows are widely used, among which the bellows can be used in gas pipelines.

[0003] In order to connect the gas bellows with other tubular structures, a joint is usually required for docking. At present, the joint used for the gas bellows is provided with an external thread at the end of the bellows, and then the external thread and the joint are threadedly connected, but the threaded connection method is prone to loosening of the thread, thereby causing problems such as gas leakage. Utility Model Content

[0004] The purpose of the utility model is to solve the technical problems existing in the background technology. To this end, a quick-release connector for a gas bellows is provided, which replaces the threaded connection with a snap-on locking method and adds a sealing ring to ensure the sealing between the gas bellows and the connector.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A quick-release connector for a gas bellows comprises a bellows, a nut, a retaining ring and an elastic retaining ring; one side of the inner wall of the nut is set as a small-diameter inner wall, and the other side is set as a large-diameter inner wall, and the small-diameter inner wall and the large-diameter inner wall are connected by an inclined inner wall; one end of the bellows extends into the large-diameter inner wall of the nut; the retaining ring is placed in the large-diameter inner wall of the nut, the small-diameter port of the retaining ring is clamped in the corrugated groove of the outer wall of the bellows, and the large-diameter port of the retaining ring abuts against the elastic retaining ring; the elastic retaining ring is clamped in the retaining ring groove, a retaining ring groove is opened in the large-diameter inner wall of the nut, and the retaining ring is located between the elastic retaining ring and the inclined inner wall of the nut.

[0007] The following is a technical solution further defined by the present utility model, in which a sealing ring is provided on the small-diameter inner wall of the nut.

[0008] The following is a technical solution further defined by the present invention, in which the small-diameter ports of the sealing ring and the retaining ring abut against and tighten the end of the bellows.

[0009] The following is a technical solution further defined by the present invention, wherein the retaining ring includes a cylindrical portion and an inner ring portion, one port of the cylindrical portion is integrally connected to the inner ring portion, the ring opening of the inner ring portion is set as a small-diameter port of the retaining ring, and the other port of the cylindrical portion is set as a large-diameter port of the retaining ring.

[0010] The following is a technical solution further defined by the present invention, wherein the outer diameter of the sealing ring is equal to the small-diameter inner wall diameter of the nut, the outer diameter of the cylindrical portion is equal to the large-diameter inner wall diameter of the nut, and the inner diameter of the elastic retaining ring is smaller than the outer diameter of the cylindrical portion.

[0011] Compared with the prior art, the utility model has the following technical effects:

[0012] The utility model is provided with a nut, a clamping ring and an elastic retaining ring, the bellows is clamped in the nut by the clamping ring, and then locked by the elastic retaining ring, which replaces the threaded connection mode, avoids the situation that the thread is loose, and ensures the sealing between the gas bellows and the joint.

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a cross-sectional structural schematic diagram of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the nut in the utility model;

[0017] Figure 3 It is a structural schematic diagram of the clamping ring in the utility model.

[0018] Figure numerals: 1, bellows; 2, nut; 2a, small-diameter inner wall; 2b, large-diameter inner wall; 2c, inclined inner wall; 2d, retaining ring groove; 3, retaining ring; 3a, small-diameter port; 3b, large-diameter port; 3c, cylindrical part; 3d, inner ring part; 4, elastic retaining ring; 5, sealing ring. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0022] like Figure 1-3 As shown, a quick-connect connector for a gas bellows is provided, comprising a bellows 1, a nut 2, a clamping ring 3, an elastic retaining ring 4 and a sealing ring 5.

[0023] One side of the inner wall of the nut 2 is set as a small-diameter inner wall 2a, and the other side is set as a large-diameter inner wall 2b, and the small-diameter inner wall 2a and the large-diameter inner wall 2b are connected by an inclined inner wall 2c.

[0024] The retaining ring 3 includes a cylindrical portion 3c and an inner ring portion 3d. One port of the cylindrical portion 3c is integrally connected to the inner ring portion 3d. The ring opening of the inner ring portion 3d is set as the small-diameter port 3a of the retaining ring 3, and the other port of the cylindrical portion 3c is set as the large-diameter port 3b of the retaining ring 3.

[0025] One end of the bellows 1 extends into the large-diameter inner wall 2b of the nut 2; then, the snap ring 3 is placed in the large-diameter inner wall 2b of the nut 2, so that the small-diameter port 3a of the snap ring 3 is stuck in the corrugated groove of the outer wall of the bellows 1, and the large-diameter port 3b of the snap ring 3 abuts on the elastic retaining ring 4; secondly, the elastic retaining ring 4 is stuck in the retaining ring groove 2d, and the retaining ring groove 2d is opened on the large-diameter inner wall 2b of the nut 2, and the snap ring 3 is located between the elastic retaining ring 4 and the inclined inner wall 2c of the nut 2; finally, a sealing ring 5 is provided on the small-diameter inner wall 2a of the nut 2; the sealing ring 5 and the small-diameter port 3a of the snap ring 3 abut and press the end of the bellows 1.

[0026] In the above structure, the outer diameter of the sealing ring 5 is equal to the diameter of the small-diameter inner wall 2a of the nut 2, the outer diameter of the cylindrical portion 3c is equal to the diameter of the large-diameter inner wall 2b of the nut 2, and the inner diameter of the elastic retaining ring 4 is smaller than the outer diameter of the cylindrical portion 3c.

[0027] The working process of this embodiment will be further described below:

[0028] After the bellows 1 is corrugated, install the retaining ring 3 on the bellows 1, gently push the bellows 1 into the nut 2, so that the retaining ring 3 falls into the nut 2, and at the same time push the elastic retaining ring 4 into the retaining ring groove 2d, and finally, put the sealing ring 5 into the nut 2.

[0029] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any technician familiar with the field can make many possible changes and modifications to the technical solution of the utility model by using the above disclosed methods and technical contents without departing from the scope of the technical solution of the utility model, or modify it into an equivalent embodiment of equivalent changes. Therefore, all equivalent changes made according to the shape, structure and principle of the utility model without departing from the content of the technical solution of the utility model should be included in the protection scope of the utility model.

Claims

1. A quick-release connector for a gas bellows, characterized in that: It comprises a bellows (1), a nut (2), a snap ring (3) and an elastic retaining ring (4); One side of the inner wall of the nut (2) is set as a small-diameter inner wall (2a), and the other side is set as a large-diameter inner wall (2b), and the small-diameter inner wall (2a) and the large-diameter inner wall (2b) are connected by an inclined inner wall (2c); One end of the bellows (1) extends into the large-diameter inner wall (2b) of the nut (2); The clamping ring (3) is placed in the large-diameter inner wall (2b) of the nut (2), the small-diameter port (3a) of the clamping ring (3) is clamped in the corrugated groove of the outer wall of the bellows (1), and the large-diameter port (3b) of the clamping ring (3) abuts against the elastic retaining ring (4); The elastic retaining ring (4) is inserted into the retaining ring groove (2d), the retaining ring groove (2d) is provided on the large-diameter inner wall (2b) of the nut (2), and the clamping ring (3) is located between the elastic retaining ring (4) and the inclined inner wall (2c) of the nut (2).

2. A quick-release connector for a gas bellows as claimed in claim 1, characterized in that: The small-diameter inner wall (2a) of the nut (2) is provided with a sealing ring (5).

3. A quick-release connector for a gas bellows as claimed in claim 2, characterized in that: The sealing ring (5) and the small-diameter port (3a) of the clamping ring (3) abut against and press the end of the bellows (1).

4. A quick-release connector for a gas bellows as claimed in claim 2, characterized in that: The clamping ring (3) comprises a cylindrical portion (3c) and an inner ring portion (3d), one port of the cylindrical portion (3c) and the inner ring portion (3d) are integrally connected, the ring opening of the inner ring portion (3d) is set as a small-diameter port (3a) of the clamping ring (3), and the other port of the cylindrical portion (3c) is set as a large-diameter port (3b) of the clamping ring (3).

5. A quick-release connector for a gas bellows as claimed in claim 4, characterized in that: The outer diameter of the sealing ring (5) is equal to the diameter of the small-diameter inner wall (2a) of the nut (2), the outer diameter of the cylindrical portion (3c) is equal to the diameter of the large-diameter inner wall (2b) of the nut (2), and the inner diameter of the elastic retaining ring (4) is smaller than the outer diameter of the cylindrical portion (3c).

Images