Flexible waterproof sleeve through-wall sealing connection structure

Abstract

The utility model discloses a through-wall sealing connection structure of a flexible waterproof sleeve. The through-wall sealing connection structure comprises a flange sleeve, a flange gland, a first limiting ring, a second limiting ring and an air bag sealing ring. The flange sleeve is pre-embedded in a building wall, and a first limiting ring and a second limiting ring are fixedly arranged on the inner wall of the flange sleeve respectively and limit radial displacement of a pipe path. When the air bag sealing ring is inflated, the outer ring abuts against the inner wall face of the flange sleeve, the inner ring abuts against the periphery of the pipeline, the front end abuts against the rear end of the flange gland, and the rear end abuts against the front end of the first limiting ring, so that plugging and sealing are conducted. According to the sealing connection structure, the rear end of the flange gland and the front end of the first limiting ring are used for limiting, displacement of the air bag sealing ring is avoided, meanwhile, the air bag sealing ring is deflated when a pipeline is mounted and dismounted, the inner ring of the air bag sealing ring is separated from the pipeline, friction force between the air bag sealing ring and the pipeline is greatly reduced, and the risk of abrasion of the air bag sealing ring is reduced; therefore, the pipeline is convenient to mount and dismount.

Description

Technical Field

[0001] The embodiments of the utility model belong to the technical field of pipeline sealing, and more specifically, relate to a flexible waterproof casing wall-penetrating sealing connection structure. Background Art

[0002] Waterproof casings are divided into two types: rigid and flexible. Usually, the flexible ones are allowed to deform after installation, while the rigid ones are not allowed to deform. Both flexible and rigid waterproof casings are hardware accessories used for pipes to pass through the walls of buildings that are subject to vibration or have strict waterproofing requirements. They are commonly used in construction, chemical industry, steel, tap water, sewage treatment and other fields.

[0003] Although the rigid waterproof casing has a good waterproof effect, the sealing material filled between the pipe and the casing is too much, which is not easy to be removed later, affecting the disassembly or movement of the pipe. In order to reflect flexibility, the seal between the flexible waterproof casing and the pipe is usually achieved by gaskets or sealing rings. Although this sealing method can achieve a waterproof effect, during the process of pipe insertion and replacement, there will inevitably be friction between the pipe and the seal, which is easy to cause wear. Especially in the later maintenance process, frequent movement will accelerate the wear of the seal, so that the seal also needs to be replaced. Summary of the invention

[0004] In view of the problems in the prior art such as wear caused by friction between pipes and seals and inconvenience in installation and removal, the utility model provides a flexible waterproof sleeve wall-penetrating sealing connection structure to solve such problems.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a flexible waterproof sleeve wall-penetrating sealing connection structure, including a flange sleeve pre-buried in a building wall, which includes a sleeve body, and flange plates respectively arranged at both ends of the sleeve body; a first limit ring and a second limit ring respectively fixed on the inner wall of the sleeve body, the inner diameters of both are the same as the outer diameter of the pipeline, limiting the axial displacement of the pipeline; a flange pressure cover fixed at the front end of the flange sleeve; and an airbag sealing ring that contacts with the inner wall surface of the flange sleeve, the inner ring contacts with the outer periphery of the pipeline, the front end contacts with the rear end of the flange pressure cover, and the rear end contacts with the front end of the first limit ring, which fills and seals the gap between the flange sleeve and the pipeline.

[0006] Furthermore, a flexible support plate is provided at the rear end of the flange cover; the flexible support plate is an elastic support plate, and an arc-shaped expansion portion is fixedly provided at its rear end, and the expansion portion contacts the front end of the airbag sealing ring to press the airbag sealing ring to the front end of the first limiting ring.

[0007] Furthermore, a sealing filling component is provided at the rear end of the flange sleeve for waterproofing, and the sealing filling component includes a flexible sealing filler layer and a sealing paste layer. The flexible sealing filler layer is provided at the rear end of the second limiting ring and is circumferentially located on the outer periphery of the pipeline; the sealing paste layer is provided at the rear end of the flexible sealing filler layer to fill and seal the pipe hole at the rear end of the flange sleeve.

[0008] Furthermore, a connecting seat is provided at the front end of the flange sleeve, and a wiring groove is provided on the inner wall surface, and an air inlet and exhaust pipe is provided in the wiring groove; one end of the exhaust pipe is connected to the airbag sealing ring, and the other end is connected to the external air nozzle; the external air nozzle is installed and fixed on the connecting seat.

[0009] Furthermore, an arc groove is opened on the inner wall surface of the flange sleeve, and the arc groove is located at the front end of the first limiting ring, which is adapted to the size of the airbag sealing ring in the inflated state, and limits the airbag sealing ring to prevent it from being axially offset by force.

[0010] Furthermore, a water-stop wing is provided on the outer periphery of the sleeve body.

[0011] Furthermore, the inner and outer circumferences of the flange sleeve are respectively provided with a waterproof paint layer.

[0012] Furthermore, the flexible sealing filler layer is made of one or more of asphalt hemp, polystyrene particles, and polyvinyl chloride foam.

[0013] Furthermore, the sealing paste layer is made of polysulfide sealing paste or polyurethane sealing paste.

[0014] Furthermore, a step portion is provided at the rear end pipe hole of the flange sleeve.

[0015] In general, the above technical solutions conceived by the utility model can achieve the following beneficial effects compared with the prior art:

[0016] (1) The sealing connection structure of the utility model improves the sealing method of the pipeline connection. While maintaining the installation requirements of the flexible connection of the pipeline, it can also improve the waterproof sealing performance and reduce the water seepage problem inside and outside the building wall. In addition, the installation and disassembly of the pipeline are relatively convenient.

[0017] (2) The sealing connection structure of the utility model is that when the airbag sealing ring is inflated, the outer ring contacts the inner wall of the flange sleeve, and the inner ring contacts the outer periphery of the pipeline, thereby filling and sealing the gap between the flange sleeve and the pipeline to achieve a waterproof effect; when it is deflated, it shrinks and is pressed and fixed to the front end of the first limit ring under the push of the flexible support plate. At this time, the inner ring of the airbag sealing ring is out of contact with the pipeline to reduce the friction between the airbag sealing ring and the pipeline during installation and removal, thereby reducing the risk of wear of the airbag sealing ring, thereby making the installation and removal of the pipeline more convenient.

[0018] (3) The sealing connection structure of the utility model can form end protection by arranging a flexible support plate and an expansion portion at the rear end of the flange cover, so that the airbag sealing ring will not be scratched during the extrusion process; and a larger contact area is formed at the end, so that it can better support the airbag sealing ring 6 from the side.

[0019] (4) The row sealing connection structure of the utility model is waterproofed by providing a sealing filling component at the rear end of the flange sleeve. The sealing filling component includes a flexible sealing filler layer and a sealing paste layer. The flexible sealing filler is arranged at the rear end of the second limiting ring and is circumferentially located on the outer periphery of the pipeline; the sealing paste layer is arranged at the rear end of the flexible sealing filler layer to fill the pipe hole at the rear end of the flange sleeve; when the sealing filling component plays a waterproof sealing role, it can be easily pried out by tools during later disassembly, which is convenient for the installation and disassembly of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a flexible waterproof casing wall-penetrating sealing connection structure of the utility model;

[0021] Figure 2 for Figure 1 A schematic diagram of the structure of the middle transverse section;

[0022] Figure 3 It is a partial enlarged structural schematic diagram of an airbag sealing ring of a flexible waterproof casing wall-penetrating sealing connection structure in the utility model;

[0023] Figure 4 It is a schematic diagram of the end surface structure of the flange sleeve with water stop wing in the utility model.

[0024] In all the drawings, the same figure marks represent the same technical features, specifically: 1-building wall, 2-flange sleeve, 201-sleeve body, 202-flange plate, 203-water stop wing, 3-flange pressure cover, 4-first limiting ring, 5-second limiting ring, 6-airbag sealing ring, 7-pipeline, 8-wiring groove, 9-inlet and exhaust small pipes, 10-external air nozzle, 11-flexible sealing filler, 12-sealing paste, 13-arc groove, 14-flexible support plate, 15-expansion part. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0026] like Figure 1-4 As shown, the utility model provides a flexible waterproof sleeve wall-penetrating sealing connection structure, comprising a flange sleeve 2, a flange gland 3, a first limiting ring 4, a second limiting ring 5 and an airbag sealing ring 6. The flange sleeve 2 is pre-buried in a building wall 1, and a first limiting ring 4 and a second limiting ring 5 are fixedly arranged on the inner wall thereof, and the inner diameters of the two are the same as the outer diameter of the pipeline 7, so as to limit the radial displacement of the pipeline 7. In the inflated state, the outer ring of the airbag sealing ring 6 contacts the inner wall surface of the flange sleeve 2, the inner ring contacts the outer periphery of the pipeline 7, the front end contacts the rear end of the flange gland 3, and the rear end contacts the front end of the first limiting ring 4, so as to fill and seal the gap between the flange sleeve 2 and the pipeline 7. The sealing connection structure of the utility model avoids the displacement of the airbag sealing ring 6 by limiting the rear end of the flange cover 3 and the front end of the first limiting ring 4. At the same time, the airbag sealing ring 6 is deflated when installing and removing the pipeline 7, which avoids the mutual interference between the inner ring of the airbag sealing ring 6 and the pipeline 7, greatly reduces the friction between the two, and reduces the risk of wear of the airbag sealing ring 6, thereby making the installation and removal of the pipeline 7 more convenient.

[0027] like Figure 1 As shown, the flange sleeve 2 is installed in the building wall in a preset manner. On the one hand, it can form a pipeline passage with a relatively fixed overall position. On the other hand, it has its own waterproof effect and has a good connection and fixing relationship with the building wall 1.

[0028] Furthermore, the flange sleeve 2 includes a sleeve body 201, and flanges 202 arranged at both ends of the sleeve body 201. The outer periphery of the sleeve body 201 is provided with at least one circle of water stop wings 203, the water stop wings 203 are pre-embedded in the building wall, and the flange 202 abuts against the wall surface of the building wall 1. The water stop wings 203 can form a water stop structure inside the building wall to prevent water from penetrating from one side of the wall to the other side; the flange 202 can fit well with the outer end surface of the building wall and form a connectable flange structure so as to be connected with the flange gland 3.

[0029] Preferably, the inner and outer circumferences of the flange sleeve 2 are respectively provided with a waterproof paint layer; the waterproof paint layer is a sprayed primer, which can not only play a waterproof role, but also play a role in protecting the sleeve itself to reduce corrosion.

[0030] The flange gland 3 is used for the flexible connection and positioning of the pipeline 7, so that the flange sleeve 2, the flange gland 3, and the pipeline are connected as a whole. Among them, the flange gland 3 is threadedly connected to the flange plate 202 through multiple bolts, so that the flange gland 3 is fixedly arranged at the front end of the flange sleeve 2, and the connection is simple and convenient. The rear end of the flange gland 3 is provided with a flexible support plate 14; the flexible support plate 14 is an elastic support plate, which shrinks under force, and its rear end is fixed with an arc-shaped expansion portion 15, and the expansion portion 15 contacts the front end of the airbag sealing ring 6, and the airbag sealing ring 6 is pressed and fixed to the front end of the first limiting ring 4. Usually, the flange gland 3 is made of metal. In order to avoid the metal end face from wearing the airbag sealing ring 6, the end protection is formed by the flexible support plate 14, and the airbag sealing ring 6 will not be scratched during the extrusion process; by setting the expansion portion 15, a larger contact area can be formed at the end, so that it can better support the airbag sealing ring 6 from the side.

[0031] When the airbag seal ring 6 is inflated, the outer ring contacts the inner wall of the flange sleeve 2, and the inner ring contacts the outer periphery of the pipeline 7, thereby filling and sealing the gap between the flange sleeve 2 and the pipeline 7 to achieve a waterproof effect; when it is deflated, it shrinks and is pressed and fixed to the front end of the first limit ring 4 under the push of the flexible support plate 14. At this time, the inner ring of the airbag seal ring 6 is out of contact with the pipeline 7 to reduce the friction between the pipeline 7 and the pipeline 7 during installation and removal. Figure 3-4 As shown, in order to realize the inflation and deflation function of the airbag sealing ring 6, the airbag sealing ring 6 is connected with an inlet and outlet small tube 9, and the inlet and outlet small tube 9 is led outward along the inner wall surface of the flange sleeve 2, and the other end of the inlet and outlet small tube 9 is also connected with an external air nozzle 10. The inlet and outlet small tube 9 can be used to inflate and deflate the airbag sealing ring 6, and the external air nozzle 10 (including the valve core) can be connected to an external air pump or an inflator for inflation, and the external air nozzle 10 is self-sealed when disconnected. Furthermore, a wiring groove 8 is provided on the inner wall surface of the flange sleeve 2, and a connecting seat is fixedly provided at the front end of the flange sleeve 2, and the connecting seat is used to install and fix the external air nozzle 10.

[0032] By providing the wiring groove 8, it is convenient to lead the inlet and exhaust small pipes 9 out regularly from the inner periphery of the sleeve with the water stop flange. The inlet and exhaust small pipes 9 can be fixed by the snap-fitting effect of the shape of the wiring groove 8 itself, or by a wire clip; the external air nozzle 10 can be fixed at the front end of the sleeve flange 2 through a small connecting seat.

[0033] Furthermore, in order to prevent external force from pushing the pipeline 7 to move, causing friction between the airbag sealing ring 6 and the inner wall of the flange sleeve 2, an arc groove 13 is opened on the inner wall of the flange sleeve 2. The arc groove 13 is located at the front end of the first limiting ring 4 and is adapted to the size of the airbag sealing ring 6 in the inflated state. The airbag sealing ring 6 can be limited to prevent it from being axially offset by force.

[0034] In order to further reduce the water seepage problem inside and outside the building wall, the rear end of the flange sleeve 2 is also provided with a sealing filling component for waterproofing. The sealing filling component includes a flexible sealing filling layer 11 and a sealing paste layer 12. The flexible sealing filling layer 11 is arranged at the rear end of the second limiting ring 5 and is circumferentially located on the outer periphery of the pipeline 7; the sealing paste layer 12 is arranged at the rear end of the flexible sealing filling layer 11 to fill and seal the rear end pipe hole of the flange sleeve 2. Further, the flexible sealing filling layer 11 can be one or more of asphalt hemp, polystyrene particles, and polyvinyl chloride foam; the sealing paste layer 12 is filled with polysulfide sealing paste or polyurethane sealing paste, and the rear end pipe hole of the flange sleeve 2 is filled and sealed by polysulfide sealing paste or polyurethane sealing paste to achieve waterproof sealing. The sealing paste layer 12 can be easily pried out by tools during later disassembly. Preferably, a step portion is provided at the rear end pipe hole of the flange sleeve 2 to enable it to better connect the sealing paste.

[0035] When the sealing connection structure of the utility model is installed, the positioning airbag sealing ring 6 is installed in the flange sleeve 2 so that the airbag sealing ring 6 is located in the arc groove 13, and the air intake and exhaust small pipes 9 are installed and clamped in the wiring groove, and the external air nozzle 10 is fixed on the front end flange 202 of the flange sleeve 2; after the installation work is completed, the two ends of the flange sleeve 2 are sealed and pre-buried in the building wall 1; after the pre-buried work is completed, the sealing films at both ends of the flange sleeve 2 are torn off, and the flange pressure cover 3 is fixed to the front end flange 202 of the flange sleeve 2 by bolts. At this time, the flexible support plate 14 pushes the airbag sealing ring 6 , so that it contacts with the first limit ring 4, and accurately adjust the unknown of the airbag sealing ring 6 again, and prevent the pipeline 7 from driving the airbag sealing ring 6 to deviate; insert the pipeline 7 into the flange sleeve 2; inflate the airbag sealing ring 6 through the external air nozzle 10, so that the outer ring of the airbag sealing ring 6 contacts with the inner wall surface of the flange sleeve 2 in the inflated state, and the inner ring contacts with the outer periphery of the pipeline 7, thereby filling and sealing the gap between the flange sleeve 2 and the pipeline 7; fill the flexible sealing filler layer 11 and the sealing paste layer 12 in the rear end pipe hole of the flange sleeve 2 in turn to perform waterproof sealing, and complete the installation operation of the sealing connection structure.

[0036] When the sealing connection structure of the utility model is disassembled, the gas in the airbag sealing ring 6 is discharged through the external air nozzle 10, so that the inner ring of the airbag sealing ring 6 is out of contact with the outer periphery of the pipeline 7; the flexible sealing filler layer 11 and the sealing paste layer 12 are pried out; the pipeline 7 can be pulled out to complete the disassembly operation.

[0037] The sealing connection structure of the utility model improves the sealing method of the pipeline connection. While maintaining the installation requirements of the flexible connection of the pipeline 7, it can also improve the waterproof sealing performance and reduce the water seepage problem inside and outside the building wall. In addition, the installation and disassembly of the pipeline 7 are relatively convenient.

[0038] The sealing connection structure of the utility model is that when the airbag sealing ring 6 is in the inflated state, the outer ring contacts the inner wall surface of the flange sleeve 2, and the inner ring contacts the outer periphery of the pipeline 7, thereby filling and sealing the gap between the flange sleeve 2 and the pipeline 7 to achieve a waterproof effect; it shrinks in the deflated state, and is pressed and fixed to the front end of the first limiting ring 4 under the push of the flexible support plate 14. At this time, the inner ring of the airbag sealing ring 6 is out of contact with the pipeline 7 to reduce the friction between the airbag sealing ring 6 and the pipeline 7 during installation and removal operations, thereby reducing the risk of wear of the airbag sealing ring 6, thereby making the installation and removal of the pipeline 7 more convenient.

[0039] The sealing connection structure of the utility model can form end protection by arranging a flexible support plate 14 and an expansion portion 15 at the rear end of the flange cover 3, so that the airbag sealing ring 6 will not be scratched during the extrusion process; and a larger contact area is formed at the end, so that it can better support the airbag sealing ring 6 from the side.

[0040] The sealing connection structure of the utility model is waterproof by further providing a sealing filling component at the rear end of the flange sleeve 2. The sealing filling component includes a flexible sealing filler layer 11 and a sealing paste layer 12. The flexible sealing filler layer 11 is provided at the rear end of the second limiting ring 5 and is circumferentially located on the outer periphery of the pipeline 7. The sealing paste layer 12 is provided at the rear end of the flexible sealing filler layer 11 to fill and plug the pipe hole at the rear end of the flange sleeve 2. When the sealing filling component plays a waterproof sealing role, it can be easily pried out by tools during later disassembly, which is convenient for the installation and disassembly of the pipeline 7.

[0041] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A flexible waterproof casing wall-penetrating sealing connection structure, characterized in that: include: A flange sleeve (2) pre-buried in a building wall (1), comprising a sleeve body (201) and flange plates (202) respectively arranged at both ends of the sleeve body (201); A first limiting ring (4) and a second limiting ring (5) are respectively fixedly arranged on the inner wall of the sleeve body (201), and the inner diameters of the first limiting ring and the second limiting ring (5) are the same as the outer diameter of the pipeline (7), so as to limit the radial displacement of the pipeline (7); A flange gland (3) fixedly arranged at the front end of the flange sleeve (2); and an airbag sealing ring (6) which contacts the inner wall surface of the flange sleeve (2), whose inner ring contacts the outer periphery of the pipeline (7), whose front end contacts the rear end of the flange gland (3), and whose rear end contacts the front end of the first limiting ring (4), so as to fill and seal the gap between the flange sleeve (2) and the pipeline (7).

2. A flexible waterproof casing wall-penetrating sealing connection structure according to claim 1, characterized in that: A flexible support plate (14) is provided at the rear end of the flange cover (3); the flexible support plate (14) is an elastic support plate, and an arc-shaped expansion portion (15) is fixedly provided at the rear end thereof, and the expansion portion (15) contacts the front end of the airbag sealing ring (6) to press the airbag sealing ring (6) to the front end of the first limiting ring (4).

3. A flexible waterproof casing wall-penetrating sealing connection structure according to any one of claims 1-2, characterized in that: The rear end of the flange sleeve (2) is also provided with a sealing filling component for waterproofing, and the sealing filling component comprises a flexible sealing filling layer (11) and a sealing paste layer (12). The flexible sealing filling layer (11) is arranged at the rear end of the second limiting ring (5) and is circumferentially located on the outer periphery of the pipeline (7); the sealing paste layer (12) is arranged at the rear end of the flexible sealing filling layer (11) to fill and seal the pipe hole at the rear end of the flange sleeve (2).

4. A flexible waterproof casing wall-penetrating sealing connection structure according to any one of claims 1-2, characterized in that: The front end of the flange sleeve (2) is provided with a connection seat, and the inner wall surface is provided with a wiring groove (8), and the wiring groove (8) is provided with an air intake and exhaust pipe (9); one end of the exhaust pipe (9) is connected to the airbag sealing ring (6), and the other end is connected to the external air nozzle (10); the external air nozzle (10) is installed and fixed on the connection seat.

5. A flexible waterproof casing wall-penetrating sealing connection structure according to any one of claims 1-2, characterized in that: An arc-shaped groove (13) is formed on the inner wall surface of the flange sleeve (2). The arc-shaped groove (13) is located at the front end of the first limiting ring (4) and is adapted to the size of the airbag sealing ring (6) in the inflated state, so as to limit the airbag sealing ring (6) and prevent it from being deflected axially due to force.

6. A flexible waterproof casing wall-penetrating sealing connection structure according to any one of claims 1-2, characterized in that: The outer periphery of the sleeve body (201) is provided with a water-stopping wing (203).

7. A flexible waterproof casing wall-penetrating sealing connection structure according to any one of claims 1-2, characterized in that: The inner and outer circumferences of the flange sleeve (2) are respectively provided with waterproof paint layers.

8. A flexible waterproof casing wall-penetrating sealing connection structure according to claim 3, characterized in that: The sealing paste layer (12) is made of polysulfide sealing paste or polyurethane sealing paste.

9. A flexible waterproof casing wall-penetrating sealing connection structure according to claim 3, characterized in that: A step portion is provided at the rear end pipe hole of the flange sleeve (2).

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