Round tube structure

Abstract

The utility model provides a circular tube structure. The circular tube structure comprises a first circular tube and a second circular tube which are coaxially arranged, the first connecting piece sleeves the radial outer end of the first circular tube; the radial outer end of the first connecting piece is sleeved with the first sealing piece, the first sealing piece comprises a first extending part and a second extending part which extend towards the two ends of the first connecting piece in the axial direction of the first circular pipe, and the first sealing piece further comprises a first protruding part protruding outwards in the radial direction of the first circular pipe; the first protruding part is located between the first extending part and the second extending part. The second sealing piece comprises a first contact part arranged at the radial outer end of the first circular tube in a sleeving manner, a bent part bent from the first contact part and a second contact part extending from the bent part to the first protruding part, and the first extending part is located between the first contact part and the second contact part; and the third sealing element and the second sealing element are symmetrically arranged. The sealing structure is simple in structure, convenient to assemble, not prone to causing deformation of the copper pipe and affecting use, and good in sealing effect.

Description

Technical Field

[0001] The utility model relates to the field of copper tube production, in particular to a round tube device. Background Art

[0002] In the prior art, the hardness of the copper tube is low, and it is easy to be deformed by pressure during the assembly process, which affects the use effect. The existing copper tube connection structure is complicated and inconvenient to assemble, and the sealing effect is poor, and it is easy to leak over time. Therefore, it is necessary to provide a round tube structure to overcome the above defects. Utility Model Content

[0003] The utility model aims to provide a round tube structure.

[0004] According to one aspect of the utility model, there is provided a circular tube structure, comprising:

[0005] First round tube;

[0006] A second circular tube, wherein the second circular tube is coaxially arranged with the first circular tube;

[0007] A first connecting piece, wherein the first connecting piece is sleeved on radial outer ends of the first circular tube and the second circular tube;

[0008] A first sealing member, wherein the first sealing member is sleeved on the radial outer end of the first connecting member, the first sealing member comprises a first extending portion and a second extending portion extending along the axial direction of the first circular tube toward two ends of the first connecting member respectively, and the first sealing member further comprises a first protruding portion protruding outwardly along the radial direction of the first circular tube, and the first protruding portion is located between the first extending portion and the second extending portion;

[0009] A second sealing member, the second sealing member comprising a first contact portion sleeved on the radial outer end of the first circular tube, a bent portion bent from the first contact portion along the radial direction of the first circular tube, and a second contact portion extending from the bent portion toward the first protruding portion, wherein the first extending portion is located between the first contact portion and the second contact portion;

[0010] A third sealing member is disposed on one side of the second extending portion. The third sealing member and the second sealing member have the same structure and are symmetrically disposed with respect to the first sealing member.

[0011] Preferably, it further comprises a first sealing sleeve and a second sealing sleeve of the same structure, wherein the first sealing sleeve is sleeved on the outside of the second sealing component, and the second sealing sleeve is sleeved on the outside of the third sealing component.

[0012] Preferably, the first connecting member includes a limiting ring protruding from the inner wall toward the axial direction, the first circular tube and the second circular tube are respectively located on both sides of the limiting ring, and a sealing ring is provided between the first connecting member and the first contact portion.

[0013] Preferably, a first gasket is provided between the bent portion and the first extending portion, and a second gasket is provided between the second contact portion and the first protruding portion.

[0014] Preferably, the outer wall of the first extension portion is inclined, the inner wall of the first extension portion extends axially parallel to the outer wall of the first circular tube, and the thickness of one end of the first extension portion close to the bending portion is smaller than the thickness of one end close to the first protrusion.

[0015] Preferably, the second contact portion extends obliquely, and the inner wall of the second contact portion is closely connected to the first extending portion.

[0016] Preferably, the first sealing sleeve comprises a top portion fitted with the bending portion and a circumferential portion fitted with the second contact portion, the first sealing sleeve is connected to the second sealing sleeve, and the first protrusion is located in the first sealing sleeve.

[0017] Preferably, the inclination angle of the outer wall of the first extension portion is greater than or equal to 3° and less than or equal to 5°.

[0018] Compared with the prior art, the circular tube structure provided by the utility model has the following beneficial effects:

[0019] The structure is simple and easy to assemble. It is not easy to cause the copper tube to deform and affect the use, and the sealing effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0021] Figure 1 It is a cross-sectional view of the circular tube structure of the utility model;

[0022] Figure 2 It is a partial enlarged view of the circular tube structure of the utility model;

[0023] Figure 3 It is a partial cross-sectional view of the circular tube structure of the utility model. DETAILED DESCRIPTION

[0024] 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 description of 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.

[0025] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0026] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0027] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0028] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0030] See also Figure 1 The utility model provides a circular tube structure, including: a first circular tube 1, a second circular tube 2, a first connecting member 3, a first sealing member 4, a second sealing member 5, a third sealing member 6, a first sealing sleeve 7 and a second sealing sleeve 8. The first circular tube 1 and the second circular tube 2 are coaxially arranged. The first connecting member 3 includes a limiting ring 31 protruding from the inner wall toward the axial direction. The first connecting member 3 is sleeved on the radial outer ends of the first circular tube 1 and the second circular tube 2. The first circular tube 1 and the second circular tube 2 are respectively located on both sides of the limiting ring 31.

[0031] See also Figure 2 and Figure 3The first sealing member 4 is sleeved on the radial outer end of the first connecting member 3, and the first sealing member 4 includes a first extension portion 41 and a second extension portion 42 extending toward both ends of the first connecting member 3 along the axial direction of the first circular tube 1. The first sealing member 4 also includes a first protruding portion 43 protruding outwardly along the radial direction of the first circular tube 1. The first protruding portion 43 is located between the first extension portion 41 and the second extension portion 42.

[0032] The second sealing member 5 includes a first contact portion 51 sleeved on the radial outer end of the first circular tube 1, a bent portion 52 bent from the first contact portion 51 along the radial direction of the first circular tube 1, and a second contact portion 53 extending from the bent portion 52 to the first protruding portion 43, and the first extending portion 41 is located between the first contact portion 51 and the second contact portion 53. A sealing ring 32 is provided between the first connecting member 3 and the first contact portion 51. A first gasket 411 is provided between the bent portion 52 and the first extending portion 41. A second gasket 431 is provided between the second contact portion 53 and the first protruding portion 43. The outer wall of the first extending portion 41 and the inner wall of the second contact portion 53 are arranged in abutment with each other. The inner wall of the first extending portion 41 and the outer wall of the first contact portion 51 are arranged in abutment with each other.

[0033] The third sealing member 6 is arranged on one side of the second extension portion 42. The third sealing member 6 has the same structure as the second sealing member 5 and is symmetrically arranged at both ends of the first sealing member 4 with respect to the first sealing member 4. The first sealing sleeve 7 and the second sealing sleeve 8 have the same structure and are symmetrically arranged. The first sealing sleeve 7 is sleeved on the outside of the third sealing member 5. The second sealing sleeve 7 is sleeved on the outside of the fourth sealing member 6. The first sealing sleeve 7 includes a top portion 71 that is fitted with the bending portion 52 and a circumferential portion 72 that is fitted with the second contact portion 53. The first sealing sleeve 7 and the second sealing sleeve 8 are connected. The first protrusion 43 is located inside the first sealing sleeve 7 and the second sealing sleeve 8.

[0034] See also Figure 2 The outer wall of the first extension portion 41 is inclined. The inner wall of the first extension portion 41 extends axially parallel to the outer wall of the first circular tube 1, and the thickness of the first extension portion 41 at one end close to the bending portion 52 is less than the thickness of the end close to the first protrusion 43. The inclination angle of the outer wall of the first extension portion is greater than or equal to 3° and less than or equal to 5°. The second contact portion 53 extends obliquely, and the outer wall of the second contact portion 53 is fitted and connected with the inner wall of the circumferential portion 72. The structure of the utility model is simple to assemble and has good sealing performance.

[0035] It will be apparent to those skilled in the art that various modifications and variations can be made to the above exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention covers modifications and variations of the present invention that fall within the scope of the appended claims and their equivalent technical solutions.

Claims

1. A circular tube structure, characterized in that: include: First round tube; A second circular tube, wherein the second circular tube is coaxially arranged with the first circular tube; A first connecting piece, wherein the first connecting piece is sleeved on radial outer ends of the first circular tube and the second circular tube; A first sealing member, wherein the first sealing member is sleeved on the radial outer end of the first connecting member, the first sealing member comprises a first extending portion and a second extending portion extending along the axial direction of the first circular tube toward two ends of the first connecting member respectively, and the first sealing member further comprises a first protruding portion protruding outwardly along the radial direction of the first circular tube, and the first protruding portion is located between the first extending portion and the second extending portion; A second sealing member, the second sealing member comprising a first contact portion sleeved on the radial outer end of the first circular tube, a bent portion bent from the first contact portion along the radial direction of the first circular tube, and a second contact portion extending from the bent portion toward the first protruding portion, wherein the first extending portion is located between the first contact portion and the second contact portion; A third sealing member is disposed on one side of the second extending portion. The third sealing member and the second sealing member have the same structure and are symmetrically disposed with respect to the first sealing member.

2. The round tube structure according to claim 1, characterized in that: The invention also comprises a first sealing sleeve and a second sealing sleeve of the same structure. The first sealing sleeve is sleeved on the outside of the second sealing component, and the second sealing sleeve is sleeved on the outside of the third sealing component.

3. The circular tube structure according to claim 2, characterized in that: The first connecting member includes a limiting ring protruding from the inner wall toward the axial direction, the first round tube and the second round tube are respectively located on both sides of the limiting ring, and a sealing ring is provided between the first connecting member and the first contact portion.

4. The circular tube structure according to claim 3, characterized in that: A first gasket is provided between the bent portion and the first extending portion, and a second gasket is provided between the second contact portion and the first protruding portion.

5. The circular tube structure according to claim 4, characterized in that: The outer wall of the first extension portion is inclined, the inner wall of the first extension portion extends axially parallel to the outer wall of the first circular tube, and the thickness of one end of the first extension portion close to the bending portion is less than the thickness of one end close to the first protruding portion.

6. The circular tube structure according to claim 5, characterized in that: The second contact portion extends obliquely, and an inner wall of the second contact portion is closely connected to the first extension portion.

7. The circular tube structure according to claim 6, characterized in that: The first sealing sleeve comprises a top portion that is fitted with the bending portion and a circumferential portion that is fitted with the second contact portion. The first sealing sleeve is connected to the second sealing sleeve, and the first protrusion is located in the first sealing sleeve.

8. The circular tube structure according to claim 7, characterized in that: The inclination angle of the outer wall of the first extension portion is greater than or equal to 3° and less than or equal to 5°.

Images