A concentric positioning and installation auxiliary device for through-wall pipe sleeves

Abstract

This utility model discloses a concentric positioning and installation auxiliary device for through-wall pipe sleeves, belonging to the field of building engineering pipe installation. It solves the problems of difficulty in accurately positioning the sleeve in one go and the tendency for it to protrude from the wall in existing installations. It includes a concentrically arranged inner pipe structure and an outer pipe structure. The inner pipe structure, which is a variable-diameter pipe with one opening and linearly widening openings in the direction away from the wall, is fitted onto the outside of the inner pipe structure. The outer pipe structure is fitted onto the outside of the inner pipe structure and fits tightly. At least two connecting components are evenly arranged circumferentially on the side of the outer pipe structure facing away from the wall. One end of each component abuts against the wall, and the other end is movably connected to the outer pipe. This device achieves precise radial positioning of the pipe and sleeve, forms stable axial support, adapts to different pipe specifications and wall thicknesses, ensures the sleeve is installed in place in one go, prevents it from protruding from the wall, improves installation accuracy and efficiency, and is suitable for through-wall pipe installation in the building industry.

Description

Technical Field

[0001] This application relates to an auxiliary device for concentric positioning and installation of through-wall pipe sleeves, belonging to the field of building engineering pipe installation. Background Technology

[0002] In building construction, the installation of water supply, drainage, fire protection, and HVAC pipes through walls relies on sleeves to isolate and protect the pipes from the wall. The sleeve must be precisely fixed within the pre-drilled hole in the wall, and its length extending beyond the wall must strictly match the subsequent finishing and pipe sealing requirements (such as the thickness of the wall plaster layer and the dimensions of the pipe insulation layer). If the sleeve extends too far beyond the wall or is recessed into the wall during installation, it will not only damage the smoothness of the wall finish but also cause misalignment between the sealing surfaces of the pipe and the sleeve, leading to a risk of water leakage.

[0003] In the current construction process, when installing through-wall pipes, workers typically first pass the pipe through a pre-drilled hole in the wall and temporarily fix it. Then, they insert a sleeve from the outside of the pipe and push it into the wall hole. During this process, the sleeve lacks a clear axial positioning reference, relying solely on the worker's subjective judgment to determine if the sleeve is flush with the wall. Due to factors such as the pipe's own weight causing it to sag and unevenness of the pre-drilled hole's inner wall, the sleeve is prone to tilting during installation, with one end entering the hole first and the other end getting stuck. This results in the sleeve protruding significantly from the wall at the working end. Furthermore, after installation, the sleeve requires multiple subsequent processes such as wall plastering and floor pouring. In traditional installation methods, the sleeve is only temporarily fixed by the sealing material inside the hole. On one hand, during wall plastering, workers stepping on it and the pressure of mortar can push the sleeve outwards, causing it to gradually protrude beyond the wall. On the other hand, when water flows through the pipe, the vibration caused by the water flow can slowly slide the sleeve outwards, resulting in secondary protrusion from the wall later. Therefore, ensuring the sleeve is precisely positioned during pipe installation to prevent the sleeve from protruding from the wall later is a core technical requirement for through-wall pipe construction in the building industry. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of existing concentric positioning devices for through-wall pipes and sleeves, and to provide an auxiliary device for concentric positioning and installation of through-wall pipe sleeves, so as to achieve one-time installation of the sleeve during pipe installation and prevent the sleeve from protruding from the wall during subsequent installation. The specific solution is as follows: A concentric positioning and installation auxiliary device for through-wall pipe sleeves includes an inner pipe structure for radial positioning and an outer pipe structure for fixed support. The inner tube structure and the outer tube structure are arranged concentrically; The inner pipe structure is sleeved on the outside of the through-wall pipe. The inner pipe structure is a variable diameter pipe with an opening on one side, and the opening of the inner pipe structure expands linearly in the direction away from the wall. The outer tube structure is sleeved on the outside of the inner tube structure and forms a tight fit with the inner tube structure. At least two connecting components for support and positioning are evenly arranged circumferentially on the end of the outer tube structure facing away from the wall. One end of the connecting component abuts against the wall, and the other end of the connecting component is movably connected to the end of the outer tube structure facing away from the wall.

[0005] Preferably, the outer tube structure has a connecting portion extending radially outward at one end facing away from the wall for connecting the connecting assembly; The connecting part is sleeved on the outside of the end of the outer tube structure facing away from the wall, and the connecting part is movably connected to the end of the connecting assembly facing away from the wall.

[0006] Preferably, the connecting assembly includes two rod-like structures that can move relative to each other; The two rod-shaped structures are movably connected at opposite ends, allowing for adjustment of the length of the entire connecting assembly. The opposite ends of the two rod-shaped structures are respectively provided with abutment portions to increase the contact area. The two abutting parts are respectively connected to the opposite ends of the two rod-shaped structures, and are respectively connected to the side of the connecting part facing the wall and pressed against the wall.

[0007] Preferably, the two rod-shaped structures are respectively provided with matching internal threads and external threads at their opposite ends. The two rod-shaped structures are movably connected through the internal threads and external threads, and the overall length of the connection assembly formed by the two rod-shaped structures can be adjusted.

[0008] Preferably, the side of the connecting part facing the wall is provided with a limiting groove that matches the abutting part located near the connecting part; The abutting part is embedded in the limiting groove, and the abutting part can move within the limiting groove.

[0009] Preferably, the inner wall of the outer tube structure is a variable diameter structure adapted to the outer wall of the inner tube structure, and the inner wall of the outer tube structure is in contact with the outer wall of the inner tube structure.

[0010] Preferably, the maximum inner diameter of the outer tube structure is smaller than the maximum outer diameter of the inner tube structure, and the maximum inner diameter of the outer tube structure is greater than the minimum outer diameter of the inner tube structure.

[0011] Preferably, the outer wall of the inner tube structure is conical, and the interior is a circular structure that matches the through-wall pipe of the through-wall pipe sleeve to be installed. The inner wall of the outer tube structure is a tapered tube adapted to the outer wall of the inner tube structure, and the outer wall of the outer tube structure is a circular structure matching the outer diameter of the sleeve to be installed.

[0012] Preferably, the connecting components are evenly or symmetrically distributed along the circumference of the outer tube structure to achieve balanced support for the outer tube structure.

[0013] Preferably, the abutting part is disc-shaped, and an anti-slip layer is provided on the side of the abutting part facing the wall or the connecting part.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows: This invention features a concentric inner and outer pipe structure. The inner pipe is fitted onto the outside of the through-wall pipe, and the outer pipe is fitted onto the outside of the inner pipe with a tight fit. This directly locks the radial relative positions of the through-wall pipe, inner pipe, and outer pipe, forming a stable concentric reference. When installing the sleeve later, only the outer pipe, which fits tightly with the inner pipe, needs to be used as the installation reference to ensure the concentricity of the sleeve and the through-wall pipe. This effectively avoids the pipe-sleeve misalignment problem caused by radial offset in traditional manual adjustments, thus reducing the concentric positioning error between the sleeve and the through-wall pipe. When installing the sleeve later, only the outer pipe that fits tightly with the inner pipe needs to be used as the installation reference to ensure the concentricity of the sleeve and the through-wall pipe. This effectively avoids the problem of pipe and sleeve being misaligned due to radial offset in traditional manual adjustment, thereby reducing the concentric positioning error of the sleeve and the through-wall pipe.

[0015] The close fit between the inner and outer pipe structures increases their contact area, reducing component sway during installation. Compared to traditional installation methods without a fixed structure, this design provides continuous and stable radial support for the pipeline, preventing temporary calibration failures caused by pipeline sway, reducing repeated adjustment procedures, and improving installation efficiency.

[0016] In this application, the inner tube structure is a reducing pipe with an opening on one side (i.e., a side break), and the pipe opening linearly widens along the direction away from the wall. The inner wall of the outer tube structure has an optimized fit with the outer wall of the inner tube structure, further improving the concentricity accuracy of the two. The fitting design of the reducing structure of the inner tube and the inner wall of the outer tube ensures a surface contact fit. At the same time, the reducing structure guides the outer tube structure to move smoothly along the axial direction of the inner tube structure, ensuring that the outer tube structure always remains concentric with the inner tube structure, avoiding concentricity datum offset caused by installation operations.

[0017] In this application, at least two connecting components are evenly arranged circumferentially at the end of the outer tube structure facing away from the wall. One end of each connecting component abuts against the wall, while the other end is movably connected to the outer tube to ensure balanced force distribution and maintain the horizontal and concentric state of the outer tube structure. The connecting components are evenly distributed along the circumference of the outer tube, forming balanced support from multiple directions and preventing the outer tube from tilting due to uneven local force distribution. Compared to traditional single-sided support or temporary pad support, this design ensures that the outer tube is always horizontal, further maintaining the concentric relationship between the inner tube, outer tube, and the main pipe, and preventing concentricity deviation caused by the tilting of the outer tube.

[0018] In this application, the connecting component includes two relatively movable rod-like structures. This relative movable design allows for precise adjustment of the connecting component's length. By adjusting the length, construction personnel can ensure a tight fit between the outer and inner pipe structures, and between the inner pipe structure and the through-wall pipe. This also ensures a tighter connection between the connecting component and the wall / outer pipe structure, preventing gaps caused by poor fit that could lead to concentricity misalignment and further improving positioning accuracy.

[0019] In this application, the abutment part is disc-shaped, and an anti-slip layer is provided on the side facing the wall or connection part. The disc-shaped abutment part further increases the contact area, and together with the anti-slip layer, it increases friction, effectively preventing the connecting components from slipping due to vibration or external force during installation. The anti-slip effect of the anti-slip layer reduces the need for secondary fixing procedures on the connecting components during installation. Construction workers do not need to take additional reinforcement measures (such as wrapping anti-slip tape) to achieve stable abutment of the connecting components, which is especially suitable for installation operations in special scenarios such as confined spaces. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the structure of the concentric positioning and installation auxiliary device for through-wall pipe sleeves in one embodiment of this application; Figure 2 This is a side view of an auxiliary device for concentric positioning and installation of through-wall pipe sleeves according to one embodiment of this application; Figure 3 for Figure 2 A cross-sectional view along the AA direction; Figure 4 This is a schematic diagram showing the connection between the positioning pipe and the fixing pipe in the concentric positioning installation auxiliary device for through-wall pipe sleeves according to one embodiment of this application; Figure 5This is an axial cross-sectional view of the fixed pipe in the concentric positioning and installation auxiliary device for through-wall pipe sleeves according to one embodiment of this application.

[0022] Explanation of reference numerals in the attached figures: 1. Wall; 2. Connecting components; 3. Through-wall pipe; 4. External pipe structure; 5. Connecting flange; 6. Internal pipe structure; 7. First pressure plate; 8. Second pressure plate. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] The present application is described in detail below with reference to the embodiments, but the present application is not limited to these embodiments.

[0025] like Figure 1-5 The illustrated auxiliary device for concentric positioning and installation of through-wall pipe sleeves includes an inner pipe structure for radial positioning and an outer pipe structure for fixed support. The inner tube structure and the outer tube structure are arranged concentrically; The inner tube structure is sleeved on the outside of the through-wall pipe. The inner tube structure is a variable diameter pipe with an opening on one side, and the opening of the inner tube structure expands linearly in the direction away from the wall, that is, the outer wall size of the inner tube structure gradually increases in the direction away from the wall. The outer tube structure is sleeved on the outside of the inner tube structure and forms a tight fit with the inner tube structure. At least two connecting components for support and positioning are evenly arranged circumferentially on the end of the outer tube structure facing away from the wall. One end of the connecting component abuts against the wall, and the other end of the connecting component is movably connected to the end of the outer tube structure facing away from the wall.

[0026] Furthermore, the outer tube structure has a connecting portion extending radially outward at one end facing away from the wall for connecting the connecting assembly; The connecting part is sleeved on the outside of the end of the outer tube structure facing away from the wall, and the connecting part is movably connected to the end of the connecting assembly facing away from the wall.

[0027] In one embodiment of this application, the connecting part is a connecting flange 5, which is connected to the outside of the end of the outer pipe structure facing away from the wall 1 and is integrally formed with the outer pipe structure. The connecting flange 5 provides a supporting foundation for the end of the connecting assembly facing away from the wall 1 when the connecting assembly is adjusted.

[0028] Furthermore, the connecting assembly includes two rod-like structures that can move relative to each other; The two rod-shaped structures are movably connected at opposite ends, allowing for adjustment of the length of the entire connecting assembly. The opposite ends of the two rod-shaped structures are respectively provided with abutment portions to increase the contact area. The two abutting parts are respectively connected to the opposite ends of the two rod-shaped structures, and respectively abut against the side of the connecting part facing the wall and against the wall.

[0029] Furthermore, the two rod-shaped structures are respectively provided with matching internal and external threads at their opposite ends. The two rod-shaped structures are connected to each other (i.e., threaded connection) through the internal and external threads, and the overall length of the connection assembly formed by the two rod-shaped structures can be adjusted.

[0030] Furthermore, the side of the connecting part facing the wall is provided with a limiting groove that matches the abutment part located near the connecting part; The abutting part is embedded in the limiting groove, and the abutting part can move within the limiting groove.

[0031] In one embodiment of this application, the connecting assembly includes a first rod and a second rod; the opposite ends of the first rod and the second rod are connected by internal and external threads, and the opposite ends of the first rod and the second rod are respectively provided with a first pressure plate 7 and a second pressure plate 8; the first pressure plate 7 and the second pressure plate 8 are respectively fixedly connected to the opposite ends of the first rod and the second rod; the first pressure plate 7 presses against the side of the flange facing the wall, and the second pressure plate 8 presses against the surface of the wall 1. Through the cooperation of the double rod structure and the pressure plates, the connecting assembly provides stable support for the fixed pipe. At the same time, the first pressure plate 7 and the second pressure plate 8 increase the contact area between the connecting assembly and the wall 1 and the connecting flange 5, avoiding damage to both due to excessive local pressure.

[0032] The overall length of the connecting assembly can be adjusted by rotating the first or second rod. On the one hand, this allows for flexible adjustment of the distance between the outer tube 4 structure and the wall, as well as the levelness of the outer tube 4 structure, to meet the axial positioning requirements under different installation scenarios. On the other hand, it allows the outer tube 4 structure to be tightly pressed against the outside of the inner tube 6 structure, so that the inner tube 6 structure is tightly fitted onto the outside of the through-wall sleeve 3, thus preventing radial displacement.

[0033] In one embodiment of this application, the connecting part (i.e., the connecting flange) has a limiting groove adapted to the first pressing plate 7 on the side facing the wall; the first pressing plate is embedded in the limiting groove and can rotate synchronously in the limiting groove as the first rod rotates; the limiting groove can radially limit the first pressing plate 7 to prevent the connecting assembly from shifting during adjustment.

[0034] Furthermore, the inner wall of the outer tube structure is a variable diameter structure adapted to the outer wall of the inner tube structure, and the inner wall of the outer tube structure is in contact with the outer wall of the inner tube structure.

[0035] Furthermore, the maximum inner diameter of the outer tube structure is smaller than the maximum outer diameter of the inner tube structure, and the minimum inner diameter of the outer tube structure is larger than the minimum outer diameter of the inner tube structure. This dimensional design allows the outer tube structure 4 to be smoothly fitted onto the inner tube structure 6, while the inner wall of the outer tube structure 4 can axially limit the inner tube structure 6, preventing the outer tube structure 4 from detaching from the end of the inner tube structure 6 facing away from the wall, ensuring the reliability of the connection between the two, and avoiding the impact of component detachment on the operation during installation.

[0036] Furthermore, the outer wall of the inner tube structure is conical, and the interior is a circular structure that matches the through-wall pipe of the through-wall pipe sleeve to be installed. The inner wall of the outer tube structure is a tapered tube adapted to the outer wall of the inner tube structure, and the outer wall of the outer tube structure is a circular structure matching the outer diameter of the sleeve to be installed.

[0037] In one embodiment of this application, the inner wall of the outer tube structure is a tapered structure with the same taper as the outer wall of the inner tube structure; the tapered inner wall design makes the inner wall of the outer tube structure and the outer wall of the inner tube structure have a surface contact fit, and the two fit tightly, further ensuring the concentricity of the positioning tube and the fixed tube, thereby ensuring the concentric positioning accuracy of the through-wall pipe and the sleeve.

[0038] Furthermore, the connecting components are evenly or symmetrically distributed along the circumference of the outer tube structure to achieve balanced support for the outer tube structure.

[0039] Furthermore, the abutting part is disc-shaped (i.e., the first pressing plate 7 and the second pressing plate 8), and the abutting part (the first pressing plate 7 and the second pressing plate 8) facing the wall or the connecting part is covered with an anti-slip layer to prevent the parts from falling off during the installation process and thus avoid interrupting the work, thereby improving the installation efficiency.

[0040] When in use, first pass the through-wall pipe 3 through the pre-set installation hole in the wall 1, and then insert the sleeve, outer pipe structure 4, and inner pipe structure 6 in sequence along the direction away from the wall outside the through-wall pipe 3 (note that the large end of the inner pipe structure 6 faces away from the wall 1, and the connecting flange 5 outside the outer pipe structure 4 faces away from the wall 1). Next, push the outer tube structure 4 along the direction away from the wall 1, gradually moving it towards the larger end of the inner tube structure 6, until the outer tube structure 4 is initially fixed outside the inner tube structure 6 and the end of the outer tube structure 4 facing the wall 1 is inserted into the sleeve (the sleeve and the outer tube structure 4 can be sealed by a sealing ring). Then, by rotating the first rod or the second rod, the overall length of the connecting assembly 2 is changed by using the threaded engagement, so that all the first pressure plates 7 of the connecting assembly 2 are inserted into the corresponding limiting grooves, and all the second pressure plates 8 are tightly pressed against the surface of the wall 1. Then continue to rotate the first rod or the second rod until it can no longer be rotated. At this time, all the first pressure plates 7 and the bottom of the limiting groove, and all the second pressure plates and the surface of the wall 1 are in a tight pressing state. The outer tube structure 4 and the inner tube structure 6, and the inner tube structure 6 and the through-wall pipe 3 are also tightly fitted together. During this process, the level of the outer tube structure 4 can be calibrated by a level and the connecting assembly can be adjusted to maintain the level of the outer tube structure 4.

[0041] Because the inner pipe structure 6 is concentric with the outer pipe structure 4, and the inner pipe structure 6 is concentric with the through-wall pipe 3. Therefore, the sleeve and the through-wall pipe 3 can be precisely concentrically positioned; after the sleeve is fixed, the connecting component 2 is rotated in the opposite direction to shorten its length, and the connecting component 2, the fixing pipe 4 and the positioning pipe 6 are removed in sequence to complete the installation.

[0042] The above description is merely a few embodiments of this application and is not intended to limit this application in any way. Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any changes or modifications made by those skilled in the art without departing from the scope of the technical solution of this application using the disclosed technical content are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A concentric positioning and installation auxiliary device for through-wall pipe sleeves, characterized in that, It includes an inner tube structure for radial positioning and an outer tube structure for fixed support; The inner tube structure and the outer tube structure are arranged concentrically; The inner pipe structure is sleeved on the outside of the through-wall pipe. The inner pipe structure is a variable diameter pipe with an opening on one side, and the opening of the inner pipe structure expands linearly in the direction away from the wall. The outer tube structure is sleeved on the outside of the inner tube structure and forms a tight fit with the inner tube structure. At least two connecting components for support and positioning are evenly arranged circumferentially on the end of the outer tube structure facing away from the wall. One end of the connecting component abuts against the wall, and the other end of the connecting component is movably connected to the end of the outer tube structure facing away from the wall.

2. The auxiliary device for concentric positioning and installation of through-wall pipe sleeves according to claim 1, characterized in that, The outer tube structure has a connecting part extending radially outward at one end facing away from the wall for connecting the connecting component. The connecting part is sleeved on the outside of the end of the outer tube structure facing away from the wall, and the connecting part is movably connected to the end of the connecting assembly facing away from the wall.

3. The concentric positioning and installation auxiliary device for through-wall pipe sleeves according to claim 2, characterized in that, The connecting assembly includes two rod-like structures that can move relative to each other; The two rod-shaped structures are movably connected at opposite ends, allowing for adjustment of the length of the entire connecting assembly. The opposite ends of the two rod-shaped structures are respectively provided with abutment portions to increase the contact area. The two abutting parts are respectively connected to the opposite ends of the two rod-shaped structures, and are respectively connected to the side of the connecting part facing the wall and pressed against the wall.

4. The concentric positioning and installation auxiliary device for through-wall pipe sleeves according to claim 3, characterized in that, The two rod-shaped structures are respectively provided with matching internal and external threads at their opposite ends. The two rod-shaped structures are movably connected through the internal and external threads, and the overall length of the connection assembly formed by the two rod-shaped structures can be adjusted.

5. The concentric positioning and installation auxiliary device for through-wall pipe sleeves according to claim 2, characterized in that, The connecting part is provided with a limiting groove on the side facing the wall, which matches the abutting part located near the connecting part. The abutting part is embedded in the limiting groove and can move within the limiting groove.

6. The concentric positioning and installation auxiliary device for through-wall pipe sleeves according to claim 1, characterized in that, The inner wall of the outer tube structure is a variable diameter structure adapted to the outer wall of the inner tube structure, and the inner wall of the outer tube structure is in contact with the outer wall of the inner tube structure.

7. The concentric positioning and installation auxiliary device for through-wall pipe sleeves according to claim 1 or 6, characterized in that, The maximum inner diameter of the outer tube structure is smaller than the maximum outer diameter of the inner tube structure, and the maximum inner diameter of the outer tube structure is greater than the minimum outer diameter of the inner tube structure.

8. The auxiliary device for concentric positioning and installation of through-wall pipe sleeves according to claim 1, characterized in that, The outer wall of the inner tube structure is conical, and the inside is a circular structure that matches the through-wall pipe of the through-wall pipe sleeve to be installed. The inner wall of the outer tube structure is a tapered tube adapted to the outer wall of the inner tube structure, and the outer wall of the outer tube structure is a circular structure matching the outer diameter of the sleeve to be installed.

9. The concentric positioning and installation auxiliary device for through-wall pipe sleeves according to claim 1, characterized in that, The connecting components are evenly or symmetrically distributed along the circumference of the outer tube structure to achieve balanced support for the outer tube structure.

10. The concentric positioning and installation auxiliary device for through-wall pipe sleeves according to claim 3, characterized in that, The abutting part is disc-shaped, and the side of the abutting part facing the wall or the connecting part is provided with anti-slip features.

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