Wall-penetrating variable-diameter connecting pipe

Abstract

The utility model relates to the technical field of wall-penetrating pipelines, and discloses a wall-penetrating variable-diameter connecting pipe which comprises a hose, the two ends of the hose are connected with a first connecting pipe and a second connecting pipe respectively, the end, away from the hose, of the first connecting pipe is provided with first connecting threads, and the first connecting threads are used for being connected with an external first fluid system; a wall penetrating mechanism is arranged at the end, away from the hose, of the second connecting pipe, the wall penetrating mechanism is used for penetrating through an external wall so that the second connecting pipe can be connected with an external second fluid system, the wall penetrating mechanism comprises a wall penetrating connector, a fastening nut and a pressing nut, the fastening nut is arranged on the outer side of the second connecting pipe in a sleeving mode, and the pressing nut is detachably arranged on the outer side of the wall penetrating connector in a sleeving mode. According to the through-wall variable-diameter connecting pipe, the through-wall connectors with the corresponding diameters can be selected according to different diameter requirements so as to meet the requirement for variable-diameter connection of pipelines, and the through-wall variable-diameter connecting pipe is wide in application range, stable in installation, not prone to loosening, convenient to install and good in sealing performance.

Description

Technical Field

[0001] The utility model relates to the technical field of wall-penetrating pipelines, in particular to a wall-penetrating variable-diameter connecting pipe. Background Art

[0002] In construction and water conservancy projects, it is often necessary to pass pipes through walls to connect different systems. For example, a fluid (gas or liquid) system on one side of the wall is connected to a fluid system on the other side through a wall-penetrating connecting pipe structure. When the diameters of the outlet pipe on one side of the wall and the incoming pipe on the other side are different, a reducing pipe is required for connection. Some existing reducing pipes are not easy to fix to the wall when passing through the wall, and are prone to loosening and displacement after installation. In addition, the wall-penetrating installation process of the reducing pipe is complicated, the installation position is limited, and the pipe sealing performance is poor. Utility Model Content

[0003] In order to solve at least one aspect of the above problems, the present invention provides a wall-penetrating variable-diameter connecting pipe, comprising: a hose, wherein the two ends of the hose are respectively connected to a first connecting pipe and a second connecting pipe, the end of the first connecting pipe away from the hose is provided with a first connecting thread, the first connecting thread is used to connect to an external first fluid system, the end of the second connecting pipe away from the hose is provided with a wall-penetrating mechanism, the wall-penetrating mechanism is used to pass through an external wall so that the second connecting pipe is connected to an external second fluid system, the wall-penetrating mechanism includes a wall-penetrating joint, a fastening nut and a compression nut, the fastening nut is sleeved on the outside of the second connecting pipe The compression nut is detachably sleeved on the outside of the through-wall joint, and a second connecting thread for connecting the second fluid system is provided on the inside of the through-wall joint. The fastening nut and the compression nut are threadedly connected, and a clamping groove corresponding to the wall is formed between the fastening nut and the compression nut. The nominal diameter of the first connecting thread is greater than or smaller than the nominal diameter of the second connecting thread; the through-wall variable diameter connecting pipe of the utility model can select a through-wall joint of corresponding diameter according to different diameter requirements to meet the needs of pipe diameter reduction connection, and has a wide range of uses. The connecting pipe is firmly installed, not easy to loosen, easy to install, and has good sealing.

[0004] Optionally, the first connecting thread is an external thread, and the second connecting thread is an internal thread.

[0005] Optionally, a first limiting protrusion is provided on the inner side of the fastening nut, and a second limiting protrusion corresponding to the first limiting protrusion is provided on the outer side of one end of the hose, and both the first limiting protrusion and the second limiting protrusion are annular.

[0006] Optionally, a third limiting protrusion is provided on the outside of the through-wall joint, and an annular stud is provided on the clamping nut. The third limiting protrusion is annular and is placed between the second limiting protrusion and the annular stud for limiting position. The outer side of the annular stud is threadedly connected to the inner side of the fastening nut.

[0007] Optionally, a first sealing ring is provided between the side end of the second connecting pipe and the side end of the wall-penetrating joint.

[0008] Optionally, a second sealing ring is provided between the wall-penetrating joint and the compression nut.

[0009] Optionally, the second sealing ring is an L-shaped sealing ring, an annular protrusion is provided on the outside of the second sealing ring, the annular protrusion is placed between the third limiting protrusion and the annular stud, and an annular mounting groove for installing the second sealing ring is provided on the wall-penetrating joint.

[0010] Optionally, a stainless steel mesh sleeve is provided on the outside of the hose, and fixing rings for fixing are provided on both ends of the stainless steel mesh sleeve.

[0011] Optionally, the hose is a metal corrugated hose.

[0012] Optionally, one end of the hose is welded to an end of the first connecting pipe away from the first connecting thread, and the other end of the hose is welded to an end of the second connecting pipe away from the wall-penetrating joint.

[0013] Compared with the prior art, the utility model has a simple structure and low production cost for the through-wall variable diameter connecting pipe; the through-wall joint of corresponding diameter can be selected according to different diameter requirements to meet the needs of pipe variable diameter connection, and has a wide range of use. The connecting pipe is stable to install, not easy to loosen, easy to install, and has good sealing; the hose can be bent and arranged according to the installation environment, and the installation is flexible; the first limiting protrusion and the second limiting protrusion are annularly abutted against each other, and the structure is stable and not easy to shake; when installing, first pass the through-wall joint through the wall, and then tighten the clamping nut and the fastening nut relative to each other, so that the wall is clamped in the clamping groove; when disassembling, only the clamping nut and the fastening nut need to be loosened relative to each other, and disassembly and assembly are convenient; two sealing rings are provided to improve the sealing of the connection, prevent gas or liquid leakage, and use is reliable; a stainless steel mesh sleeve is provided on the outside of the hose, and the stainless steel mesh sleeve plays a certain protective role for the internal hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional diagram of the wall-penetrating variable-diameter connecting pipe of the utility model;

[0015] Figure 2 This is a cross-sectional view of the wall-penetrating variable-diameter connecting pipe of the utility model;

[0016] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0017] Figure 4 This is an exploded view of the wall-penetrating variable-diameter connecting pipe of the utility model;

[0018] Figure 5 This is a structural diagram of a through-wall joint for a through-wall variable-diameter connecting pipe according to the present invention;

[0019] The corresponding component names of the various figure marks in the figure are: 1 is a hose, 2 is a first connecting pipe, 201 is a first connecting thread, 3 is a second connecting pipe, 301 is a second limiting protrusion, 4 is a wall, 5 is a through-wall joint, 501 is a second connecting thread, 502 is a third limiting protrusion, 503 is an annular mounting groove, 504 is an anti-slip groove, 6 is a fastening nut, 601 is a first limiting protrusion, 7 is a clamping nut, 701 is an annular stud, 8 is a clamping groove, 81 is a first sealing ring, 82 is a second sealing ring, 821 is an annular protrusion, 9 is a stainless steel mesh sleeve, and 91 is a fixing ring. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0021] In the description of the present invention, it should be understood that the terms "upper" and "lower" and the like indicate positions or location relationships based on the positions or location relationships during normal use of the product.

[0022] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0023] See Figure 1-Figure 5The embodiment of the present invention provides a wall-penetrating variable-diameter connecting pipe, which is a connecting pipe device for a pipeline to pass through a wall and switch between different diameters, comprising: a hose 1, with a first connecting pipe 2 and a second connecting pipe 3 connected to both ends of the hose 1, the first connecting pipe 2 being provided with a first connecting thread 201 at the end away from the hose 1, the first connecting thread 201 being used to connect to an external first fluid system, the second connecting pipe 3 being provided with a wall-penetrating mechanism at the end away from the hose 1, the wall-penetrating mechanism being used to pass through an external wall 4 so that the second connecting pipe 3 is connected to an external second fluid system, the first fluid system and the second fluid system being respectively located on both sides of the wall 4, the wall-penetrating mechanism comprising a wall-penetrating joint 5, a fastening nut 6 and a compression nut 7, the fastening nut 6 being sleeved on the second connecting pipe 3 On the outside, the tightening nut 7 is detachably sleeved on the outside of the through-wall joint 5, and the inside of the through-wall joint 5 is provided with a second connecting thread 501 for connecting to the second fluid system. The fastening nut 6 and the tightening nut 7 are threadedly connected, and a clamping groove 8 corresponding to the wall 4 is formed between the fastening nut 6 and the tightening nut 7. The nominal diameter of the first connecting thread 201 is greater than or smaller than the nominal diameter of the second connecting thread 501; the through-wall variable diameter connecting pipe of the utility model has a simple structure and low production cost; the through-wall joint of the corresponding diameter can be selected according to different diameter requirements to meet the needs of pipe variable diameter connection, with a wide range of use and flexible use. The connecting pipe is firmly installed, not easy to loosen, easy to install, and has good sealing; the hose can be bent and arranged according to the installation environment, and is flexible to install.

[0024] See Figure 1-Figure 5 , the first connecting thread 201 is an external thread, and the second connecting thread 501 is an internal thread; the first connecting thread 201 can also be set as an internal thread and the second connecting thread 501 as an external thread according to the connection requirements; a first limiting protrusion 601 is provided on the inner side of the fastening nut 6, and a second limiting protrusion 301 corresponding to the first limiting protrusion 601 is provided on the outer side of one end of the second connecting pipe 3. The first limiting protrusion 601 and the second limiting protrusion 301 are both annular, and the first limiting protrusion 601 and the second limiting protrusion 301 are annular. The structure is stable and not easy to shake; a third limiting protrusion 502 is provided on the outer side of the through-wall joint 5, and an annular stud is provided on the tightening nut 7 701, the third limiting protrusion 502 is annular, and the third limiting protrusion 502 is placed between the second limiting protrusion 301 and the annular stud 701 for limiting position. The outer side of the annular stud 701 is threadedly connected to the inner side of the fastening nut 6. During installation, first pass the through-wall joint 5 through the wall, and then tighten the clamping nut 7 and the fastening nut 6 relative to each other, so that the wall is clamped in the clamping groove; during disassembly, only the clamping nut 7 and the fastening nut 6 need to be loosened relative to each other, which is convenient for assembly and disassembly; if it is necessary to replace the through-wall joint 5 with other thread diameters, first screw the fastening nut 6 and the clamping nut 7 to separate them, and then remove the clamping nut 7 from one side of the through-wall joint 5 and install it on another through-wall joint 5, which is easy to operate.

[0025] See Figure 2-Figure 5 A first sealing ring 81 is provided between the side end of the second connecting pipe 3 and the side end of the through-wall joint 5, specifically, the first sealing ring 81 abuts between the second limiting protrusion 301 and the third limiting protrusion 502; a second sealing ring 82 is provided between the through-wall joint 5 and the tightening nut 7. Two sealing rings are provided to improve the sealing of the connection, prevent leakage of gas or liquid, and ensure reliable use; an anti-slip groove 504 is provided on the outside of the through-wall joint 5 to facilitate connection with an external pipeline; the second sealing ring 82 is an L-shaped sealing ring, and an annular protrusion 821 is provided on the outside of the second sealing ring 82. The annular protrusion 821 is placed between the third limiting protrusion 502 and the annular stud 701, and an annular mounting groove 503 for installing the second sealing ring 82 is provided on the through-wall joint 5. The second sealing ring 82 is firmly installed, not easily displaced, and the seal is more stable.

[0026] See Figure 1 、 Figure 2 and Figure 4 , a stainless steel mesh sleeve 9 is provided on the outside of the hose 1, and the stainless steel mesh sleeve 9 plays a certain protective role on the internal hose 1. Fixed rings 91 are provided at both ends of the stainless steel mesh sleeve 9 for fixing. In this embodiment, two fixed rings 91 are provided, which are respectively fixed at both ends of the stainless steel mesh sleeve 9. After fixing, the stainless steel mesh sleeve 9 is not easy to move. The fixed rings 91 are fixed by a crimping device. After the crimping is completed, the fixed rings 91, the mesh sleeve 4, and the first connecting pipe 2 (the second connecting pipe 3 at the other end) can be welded into one to further enhance the stability of the connection structure. The hose 1 is a metal corrugated hose made of stainless steel, which is more rust-resistant and wear-resistant during use. Stainless steel bellows are widely used in liquid transportation systems, instruments and meters, industrial gas and liquid medium transportation and other fields. It can compensate for the mutual displacement of the connection ends of pipelines or machines and equipment, absorb vibration energy, and play a role in vibration reduction and noise reduction. One end of the hose 1 is welded to the end of the first connecting pipe 2 away from the first connecting thread 201, and the other end of the hose 1 is welded to the end of the second connecting pipe 3 away from the wall joint 5. The structure is simple and the production cost is low.

[0027] The utility model discloses a wall-penetrating variable-diameter connecting pipe with a simple structure and low production cost; a wall-penetrating joint of corresponding diameter can be selected according to different diameter requirements to meet the needs of pipe diameter-variable connection, and has a wide range of uses. The connecting pipe is stable to install, not easy to loosen, easy to install, and has good sealing; the hose can be bent and arranged according to the installation environment, and the installation is flexible; the first limiting protrusion and the second limiting protrusion are annularly abutted against each other, and the structure is stable and not easy to shake; when installing, first pass the wall-penetrating joint through the wall, and then tighten the clamping nut and the fastening nut relative to each other, so that the wall is clamped in the clamping groove; when disassembling, it is only necessary to loosen the clamping nut and the fastening nut relative to each other, and disassembly and assembly are convenient; two sealing rings are provided to improve the sealing of the connection, prevent gas or liquid leakage, and use is reliable; a stainless steel mesh sleeve is provided on the outside of the hose, and the stainless steel mesh sleeve plays a certain protective role for the internal hose.

[0028] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A wall-penetrating variable diameter connecting pipe, characterized in that: include: A hose (1), wherein both ends of the hose (1) are respectively connected to a first connecting pipe (2) and a second connecting pipe (3), wherein the end of the first connecting pipe (2) away from the hose (1) is provided with a first connecting thread (201), and the first connecting thread (201) is used to connect to an external first fluid system, and the end of the second connecting pipe (3) away from the hose (1) is provided with a wall-penetrating mechanism, and the wall-penetrating mechanism is used to pass through an external wall (4) so ​​that the second connecting pipe (3) is connected to the external second fluid system, and the wall-penetrating mechanism includes a wall-penetrating joint (5), a fastening nut (6) and a compression nut ( 7), the fastening nut (6) is sleeved on the outside of the second connecting pipe (3), the compression nut (7) is detachably sleeved on the outside of the through-wall joint (5), the through-wall joint (5) is provided with a second connecting thread (501) for connecting the second fluid system on the inside, the fastening nut (6) and the compression nut (7) are threadedly connected, a clamping groove (8) corresponding to the wall (4) is formed between the fastening nut (6) and the compression nut (7), and the nominal diameter of the first connecting thread (201) is greater than or smaller than the nominal diameter of the second connecting thread (501).

2. The wall-penetrating variable-diameter connecting pipe according to claim 1, characterized in that: The first connecting thread (201) is an external thread, and the second connecting thread (501) is an internal thread.

3. The wall-penetrating variable-diameter connecting pipe according to claim 1, characterized in that: A first limiting protrusion (601) is provided on the inner side of the fastening nut (6), and a second limiting protrusion (301) is provided on the outer side of one end of the second connecting pipe (3) for limiting the position corresponding to the first limiting protrusion (601), and both the first limiting protrusion (601) and the second limiting protrusion (301) are annular.

4. The wall-penetrating variable-diameter connecting pipe according to claim 3, characterized in that: A third limiting protrusion (502) is provided on the outer side of the through-wall joint (5), and an annular stud (701) is provided on the compression nut (7). The third limiting protrusion (502) is annular and is positioned between the second limiting protrusion (301) and the annular stud (701) for limiting position. The outer side of the annular stud (701) is threadedly connected to the inner side of the fastening nut (6).

5. The wall-penetrating variable-diameter connecting pipe according to claim 1, characterized in that: A first sealing ring (81) is provided between the side end of the second connecting pipe (3) and the side end of the wall-penetrating joint (5).

6. The wall-penetrating variable-diameter connecting pipe according to claim 4, characterized in that: A second sealing ring (82) is provided between the wall-penetrating joint (5) and the compression nut (7).

7. The wall-penetrating variable-diameter connecting pipe according to claim 6, characterized in that: The second sealing ring (82) is an L-shaped sealing ring, and an annular protrusion (821) is provided on the outside of the second sealing ring (82), and the annular protrusion (821) is placed between the third limiting protrusion (502) and the annular stud (701). The through-wall joint (5) is provided with an annular mounting groove (503) for mounting the second sealing ring (82).

8. The wall-penetrating variable-diameter connecting pipe according to claim 1, characterized in that: The outer side of the hose (1) is sheathed with a stainless steel mesh sleeve (9), and both ends of the stainless steel mesh sleeve (9) are sheathed with fixing rings (91) for fixing.

9. The wall-penetrating variable-diameter connecting pipe according to any one of claims 1 to 8, characterized in that: The hose (1) is a metal corrugated hose.

10. The wall-penetrating variable-diameter connecting pipe according to claim 9, characterized in that: One end of the hose (1) is welded to an end of the first connecting pipe (2) away from the first connecting thread (201), and the other end of the hose (1) is welded to an end of the second connecting pipe (3) away from the wall-penetrating joint (5).

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