CN220891396U - Double-layer corrugated pipe joint structure - Google Patents

Abstract

The utility model discloses a double-layer corrugated pipe joint structure which comprises a joint mechanism and a sealing mechanism, wherein the joint mechanism comprises a female joint, a male joint and a clamping ring, wherein a threaded joint is arranged at one end, opposite to the male joint, of the male joint; therefore, the ends of the two corrugated pipes are clamped through the sealing rubber pipe with a larger elastic space, so that the two ends of the sealing rubber pipe are elastically clamped with the ends of the corrugated pipes all the time, and the connection tightness between the corrugated pipes is improved.

Description

Double-layer corrugated pipe joint structure

Technical Field

The utility model relates to the technical field of corrugated pipes, in particular to a double-layer corrugated pipe joint structure.

Background

The corrugated pipe is a tubular elastic sensing element formed by connecting foldable corrugated sheets along the folding and stretching directions. The bellows is widely used in instruments and meters, and is mainly used as a measuring element of a pressure measuring instrument to convert pressure into displacement or force. The corrugated pipe mainly comprises a metal corrugated pipe, a corrugated expansion joint, a corrugated heat exchange pipe, a diaphragm capsule, a metal hose and the like. The metal corrugated pipe is mainly applied to the functions of compensating thermal deformation, shock absorption, pipeline settlement deformation and the like of pipelines, and is widely applied to industries such as petrochemical industry, instruments, aerospace, chemical industry, electric power, water conservancy, metallurgy and the like. Bellows made of other materials such as plastics have irreplaceable functions in the fields of medium transmission, electric power threading, machine tools, household appliances and the like.

In the process of using metal corrugated pipes for gas or liquid transmission, the corrugated pipes are connected through corrugated pipe joints, and a common corrugated pipe joint is in a structure disclosed in patent CN213745414U, and sealing is generally achieved by directly extruding the corrugated pipe and a joint part through a sealing gasket in a threaded manner, but the sealing gasket ages after a period of use, and particularly the sealing gasket hardens in a cold day, and elasticity is reduced, so that the connection tightness between the corrugated pipes is affected.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems in the related art to some extent.

Therefore, an object of the present utility model is to provide a double-layer bellows joint structure, in which ends of two bellows are clamped by a sealing rubber tube with a larger elastic space, so that two ends of the sealing rubber tube are elastically clamped with the ends of the bellows all the time, and connection tightness between the bellows is improved.

In order to achieve the above object, a first aspect of the present utility model provides a double-layer corrugated pipe joint structure, which comprises a joint mechanism and a sealing mechanism, wherein the joint mechanism comprises a female joint, a male joint and a snap ring, wherein a threaded joint is arranged at one end of the male joint opposite to the female joint, the male joint is in threaded connection with the female joint through the threaded joint, the snap ring is respectively arranged at the inner sides of the male joint and the female joint, the sealing mechanism comprises a sealing rubber pipe, the sealing rubber pipe is penetratingly arranged at the inner sides of the threaded joint, engagement tongues are arranged at two ends of the sealing rubber pipe, supporting gaskets are arranged inside the engagement tongues, and springs are arranged between the adjacent supporting gaskets.

According to the double-layer corrugated pipe joint structure, the ends of the two corrugated pipes are clamped through the sealing rubber pipe with a large elastic space, so that the two ends of the sealing rubber pipe are always elastically clamped with the ends of the corrugated pipes, and the connection tightness between the corrugated pipes is improved.

In addition, a double-layer corrugated pipe joint structure proposed according to the application above can also have the following additional technical features:

Specifically, each clamping ring comprises two semi-rings, a corrugated clamping groove is formed in the inner side of each semi-ring, and splicing seams are formed at two ends of each semi-ring.

Specifically, the inner sides of the male connector and the female connector are respectively provided with a compressing guide groove for supporting the clamping ring.

Specifically, a sealing rubber ring is arranged on the outer circumferential wall of the sealing rubber tube, and a flow hole is formed in the inner side of the sealing rubber tube in a penetrating manner.

Specifically, the end of the engagement tongue is provided with a chamfer.

Specifically, two ends of the spring are respectively connected with two adjacent support washers.

Specifically, bellows introduction ports are formed in the male connector and the female connector, and bar patterns are formed in the outer surfaces of the male connector and the female connector.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic illustration of a double-deck bellows joint structure according to an embodiment of the present utility model;

FIG. 2 is a front cross-sectional view of a double-layer bellows joint structure according to one embodiment of the present utility model;

fig. 3 is a schematic structural view of a snap ring in a double-layer bellows joint structure according to an embodiment of the present utility model.

As shown in the figure: 1. a bellows; 2. a joint mechanism; 21. a female joint; 22. a threaded joint; 23. a male connector; 24. a clasp; 241. compressing the guide groove; 242. a corrugated clamping groove; 243. a splice joint; 3. a sealing mechanism; 31. a connecting tongue; 32. a support washer; 33. a spring; 34. sealing the rubber tube; 35. a flow hole; 4. a bellows inlet.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model. On the contrary, the embodiments of the utility model include all alternatives, modifications and equivalents as may be included within the spirit and scope of the appended claims.

A double-layered bellows joint structure according to an embodiment of the present utility model is described below with reference to the accompanying drawings.

As shown in fig. 1-3, a double-layer corrugated pipe joint structure according to an embodiment of the present utility model includes a joint mechanism 2 and a sealing mechanism 3, wherein the joint mechanism 2 includes a female joint 21, a male joint 23, and a snap ring 24, wherein a threaded joint 22 is provided at an end of the male joint 23 opposite to the female joint 21, the male joint 23 is screwed with the female joint 21 through the threaded joint 22, and the snap ring 24 is provided inside the male joint 23 and the female joint 21, respectively.

The sealing mechanism 3 comprises a sealing rubber tube 34, the sealing rubber tube 34 is arranged on the inner side of the threaded joint 22 in a penetrating mode, the two ends of the sealing rubber tube 34 are provided with connecting tongues 31, supporting washers 32 are arranged in the connecting tongues 31, and springs 33 are arranged between the adjacent supporting washers 32.

According to the utility model, the sealing rubber tube 34 with a larger elastic space is added in the connector of the corrugated tube 1 to clamp the end parts of the two corrugated tubes 1, so that the two ends of the sealing rubber tube 34 are always elastically clamped with the end parts of the corrugated tubes 1, and the connection tightness between the corrugated tubes 1 is improved.

In one embodiment of the present utility model, as shown in fig. 2-3, each snap ring 24 includes two half rings, the inner sides of the half rings are provided with corrugated clamping grooves 242, two ends of the half rings are provided with splicing seams 243, and the inner sides of the male connector 23 and the female connector 21 are provided with pressing guide grooves 241 for supporting the snap rings 24.

Specifically, since the corrugated structure is provided on the outside of the corrugated pipe 1, the snap ring 24 is designed into two half ring structures, the corrugated clamping groove 242 on the inner side of the half ring clamps the outer wall corrugation of the corrugated pipe 1, the two half rings are clamped by the splice joint 243, and then the snap ring 24 is guided into the compression guide groove 241 for fixing the corrugated pipe 1 inside the male joint 23 or the female joint 21.

In one embodiment of the present utility model, as shown in fig. 2-3, a sealing rubber ring is disposed on the outer circumferential wall of the sealing rubber tube 34, on one hand, the sealing rubber tube 34 is fastened and fixed on the inner side of the threaded joint 22, and a through hole 35 is formed through the inner side of the sealing rubber tube 34 for connecting the fluid communication between the two bellows 1.

In one embodiment of the present utility model, as shown in fig. 2-3, the end of the connection tongue 31 is provided with a chamfer, so that the end of the bellows 1 is conveniently aligned and clamped inside the connection tongue 31, and two ends of the spring 33 are respectively connected with two adjacent support washers 32, so that the two support washers 32 are stably supported, and the end of the bellows 1 is pressed and sealed.

In one embodiment of the present utility model, as shown in fig. 2-3, the male connector 23 and the female connector 21 are provided with bellows inlets 4 for guiding the bellows 1, and the outer surfaces of the male connector 23 and the female connector 21 are provided with bar patterns for tightening the male connector 23 and the female connector 21.

For clarity of description of the above embodiments, referring to fig. 1-3, when the double-layer bellows joint structure of the present utility model is used, first two sections of bellows 1 respectively pass through the male joint 23 and the female joint 21 through the bellows inlet 4, the outer wall bellows of the bellows 1 is clamped by using the clamping ring 24, the joint of the bellows 1 is reserved for a certain length to be clamped with the engagement tongue 31, and then the clamping ring 24 is led into the compression guide groove 241.

Then one end of the sealing rubber tube 34 is inserted into the inner side of the threaded joint 22 of the male joint 23, then the male joint 23 and the female joint 21 are gradually screwed up through the threaded joint 22, as the male joint 23 and the female joint 21 are mutually close, the joint tongues 31 at the two ends of the sealing rubber tube 34 are clamped with the two corrugated pipes 1, as the male joint 23 and the female joint 21 are continuously close, the springs 33 in the sealing rubber tube 34 are compressed, the two ends of the springs 33 support the two support washers 32 to be connected, the two support washers 32 are stably supported, and the joint tongues 31 are further used for carrying out long-term compression sealing on the end parts of the corrugated pipes 1, and the joint tongues 31 are free from deformation or hardening.

In summary, according to the double-layer corrugated pipe joint structure provided by the embodiment of the utility model, the ends of the two corrugated pipes are clamped through the sealing rubber pipe with a larger elastic space, so that the two ends of the sealing rubber pipe are always elastically clamped with the ends of the corrugated pipes, and the connection tightness between the corrugated pipes is improved.

In the description of this specification, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (7)

1. The double-layer corrugated pipe joint structure is characterized by comprising a joint mechanism (2) and a sealing mechanism (3), wherein the joint mechanism (2) comprises a female joint (21), a male joint (23) and a clamping ring (24), a threaded joint (22) is arranged at one end, opposite to the female joint (21), of the male joint (23), the male joint (23) is in threaded connection with the female joint (21) through the threaded joint (22), and the clamping ring (24) is respectively arranged at the inner sides of the male joint (23) and the female joint (21);

The sealing mechanism (3) comprises a sealing rubber tube (34), the sealing rubber tube (34) penetrates through the inner side of the threaded joint (22), connecting tongues (31) are arranged at two ends of the sealing rubber tube (34), supporting washers (32) are arranged in the connecting tongues (31), and springs (33) are arranged between the adjacent supporting washers (32).

2. The double-layer corrugated pipe joint structure according to claim 1, wherein each clamping ring (24) comprises two semi-rings, corrugated clamping grooves (242) are formed in the inner sides of the semi-rings, and splicing seams (243) are formed at two ends of the semi-rings.

3. The double-layer corrugated pipe joint structure according to claim 2, wherein the inner sides of the male joint (23) and the female joint (21) are respectively provided with a pressing guide groove (241) for supporting the clamping ring (24).

4. The double-layer corrugated pipe joint structure according to claim 1, wherein a sealing rubber ring is arranged on the outer circumferential wall of the sealing rubber pipe (34), and a flow hole (35) is formed in the inner side of the sealing rubber pipe (34) in a penetrating manner.

5. A double-deck bellows joint structure according to claim 1, characterized in that the end of the engagement tongue (31) is provided with a chamfer.

6. A double-deck bellows joint structure according to claim 1, characterized in that both ends of the spring (33) are connected with two adjacent support washers (32), respectively.

7. The double-layer corrugated pipe joint structure according to claim 1, wherein the male connector (23) and the female connector (21) are provided with corrugated pipe inlets (4), and the outer surfaces of the male connector (23) and the female connector (21) are provided with strip-shaped grains.